Balau Timber Deck – Westville

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Here’s some before pics and some after pics of a deck in Westville that had rotted and was removed and replaced.

The original deck had been built using H2 CCA Treated pine as a structure and what looked like balau deck boards and H2 CCA treated timber was used in the balustrade. See here for an article on the correct Hazard Classification for using treated pine in outdoor projects. https://blog.thewoodjoint.co.za/2015/06/21/balau-vs-cca-treated-substructure-in-your-wooden-deck-durban-and-cape-town/.

It is vitally important to use at least H3 CCA treated pine in any outdoor application where occasional wetting occurs. H2 CCA pine is designed for roofs and will rot outdoors. H3 is designed for outdoors and will last at least 50 years outdoors in the rain provided it has a chance to dry out after it rains.

The balau deck boards on this deck run in the opposite direction to the way we normally build them. In other words they run the width rather than the length. The reason for this was that we needed to follow the curve of the existing paving and running the deck boards the length would have resulted in long thin slivers of deck boards to get the curve. Running them the width meant we could cut the end of the deck board to follow the curve. A much neater job at the end of the day and less chance of splintering.

Because of the way the deck boards run it results in short main beams and longer joists as can be seen from the front view of the deck. The mean beams always run in the same direction as the deck boards with joists on top of beams running perpendicular to deck boards. The ends of these main beams of 228mm can look unsightly and can be clad to cover the pine. In this instance though the client opted not to clad them as there is unfortunately an additional cost and the front of this deck is not really seen unless one is standing in the garden on the lower level. We did clad the sides though as these are very visible. This we did at no extra cost. You know, “going the extra mile” and all.

The balustrade is full balau this time around and should outlast at least me. Maybe not my kids, as all wood will rot in time. The balau just takes a lot longer to rot which makes it the ideal outdoor timber to be used in timber decks and balustrades.

The deck was oiled as opposed to being coated which retains the natural look and feel of the wood and is easy to maintain going forward as you simply clean it and put more oil on it.

For a free no obligation quote on your timber decking, balustrade, pergola, screens and other outdoor work, please contact us on 082 496 5444 or use the contact us form below. We also supply install in door wooden floors.

Wooden Deck Waterfall September 2018

Wooden Deck Durban Waterfall

The video here shows the deck we built from the neighbours yard with the mist rolling down the hill in the early morning. Besides being an incredible sight to see one can see how this garden lends itself to a wooden deck.

The deck was built square off the house towards the boundary fence which over looks The Valley of a Thousand Hills near the Hillcrest area. On either side at the back of the deck there are stairs that lead back to each side of the house. The deck totalled about 80 to 90 square metres.

It was built the standard way we build with a treated pine sub structure and 19 x 68mm yellow balau deck boards. There is a difference between red and yellow balau deck boards. We stock only yellow balau deck boards and use only yellow balau in the building of our decks. The wooden balustrade was our standard vertical picket style balustrade, which is the safest at heights like these, as there are no gaps that exceed 100mm and is therefore compliant in terms of SANS building regulations. The balustrade is at a height of 1.0m. Once you start going higher than about 2 stories it is advisable to build the balustrade at 1.2m for safety reasons.

Stairs can either be built as open risers or closed risers. As open risers one can see through them whereas closed risers the underside of the deck is not visible. From a cost point of view they are the same so the choice would be made on whether or not you want to look below at the structure or not.

All our decks are finished by filling the counter sunk screw holes with a clear epoxy and saw dust mixture and then sanding flat before oiling with a decking oil. There is an option to leave the deck unoiled and to allow it to weather naturally and turn a grey colour.

In the still pic one can how effective lighting is below the capping to illuminate the deck yet not shine in your eyes. These are easy to install in that they are glued below the capping. They are LED lights so very little power is used to illuminate the deck surface.

For a no obligation quote on your sun deck, pool deck, timber balustrades and other timber related outdoor or indoor construction, please contact us on 082 496 5444 or use the contact form below.

Wooden Balau Deck Built Waterfall, Durban July 2018

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This wooden deck we built in Waterfall, Durban was part of a new build at Focus on Ithemba along Blessing Ninela Road, Waterfall. They were building a new boardroom and office complex and part of the design was a wooden exterior deck.

The job was referred to us by Mass Landscapes, Miles Steenhuysen, who was contracted to do the landscaping. His details can be found here.

In consultation with Miles and the project manager we designed the deck so as to flow around this office complex comfortably and aesthetically and within budget.

The structure of the deck was the standard H3 and H4 CCA treated pine. H3 and H4 CCA treated pine is suitable for outdoors decks. H3 has a life span of a minimum of 50 years and correctly treated H4 pine can live in the ground in constant contact with wet soil for a minimum of 20 years. These are guidelines provided by www.sawpa.co.za. The full document can be found here.

We used 19 x 68mm yellow balau deck boards as the surface. There is a difference between red and yellow balau. The red balau, which is a bit cheaper in South Africa, is a lot more porous and less dense than the yellow balau and as a result will absorb and retain water more easily than yellow balau and will therefore probably rot more quickly. We use only yellow balau which is the most cost-effective hardwood for decking in South Africa. It is not correct to assume that treated pine is cheaper than balau deck boards. Please see here for an article on the difference between balau and pine in decking.

The building we were attaching this deck to was not completely square with itself as it was an old building that had been extended. As such one needs to be very careful when building wooden decks against walls that aren’t square or straight. At some point there will need to be a correction to eliminate the problem and it needs to occur where it is less visible. Either the deck can be built square to itself but it will highlight the errors on the building or the deck needs to be built off square to take up any difference between the building and the deck in a place where it is less visible and can be concealed.

Screw holes we filled with epoxy and sanded flat. The epoxy used was a clear epoxy which was mixed with saw dust to match the colour. The epoxy in the screw holes prevents water sitting in the counter sunk screw hole and being absorbed up the end grain which would cause rot to set in more quickly. The deck can be oiled after sanding or left to grey naturally.

For a free no obligation quote on timber decking and related construction, we can be contacted on 082 496 5444 or use the contact us form below.

Wooden Balau Decking Companies in Durban

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Here’s a wooden deck we at The Wood Joint built in Durban recently. The Wood Joint is a wooden decking company situated in Durban and servicing most of KZN. It was a low-level wooden deck basically at ground level joining the pool to the patio and semi surrounds. The site was situated in la Lucia Durban.

When building a wooden deck that will join a verandah to a pool, one needs to be careful to set the height of the pool correctly. The height to the verandah is of course pretty much set based on what the threshold of the sliding doors are. So working from a datum line of the top of the tiles of the verandah one would set the top of the concrete ring beam of the pool down 70mm from the required height of the deck. This will allow for a substructure of 50mm and a deck board thickness of 20mm (19mm in fact but to keep things simple rounded to 20mm). A 50mm batten fixed to the top of the concrete ring beam of the pool will give sufficient space to allow water to evaporate properly, keeping below the deck as dry as possible, and enough structure to create a positive fixing of deck board to bearer. The distance created between top of deck and pool should be minimal. It is not advisable to go much higher than 70mm because it creates a very big “climb” out the pool (from water level to top of deck).

In this deck pictured you will see we ran the deck boards perpendicular to the verandah and pool side. Using this method it is not that important if the side of the pool is parallel to the verandah as the length of the deck boards can be varied quite easily without noticing any difference in length. On the other hand when the deck boards are run parallel to the pool side and verandah one needs to be careful to get the two as perfectly parallel as possible. Any difference will be visible because a deck board will need to be cut in a wedge shape to complete the space. If the difference is not that great then one can “fan” the deck boards to take up the difference in space by making one end’s gaps slightly bigger than the other end. So on one end a 6mm gap can be left and on the other a 4mm gap (normally 5mm throughout). This gains 1mm per deck board run. After 20 deck boards one can adjust for a 20mm difference in spacing. Another “trick” when running boards parallel to the pool side and verandah is to try to end on a full board rather than a half board. Again space between boards can be adjusted either up or down to try to end on a full board. It is much neater and won’t cause as many problems going forward. From the pics you’ll see we ended the deck on a half board which in this case was unavoidable because of the configuration of paving and deck.

You’ll see from the pics that the garden is mostly left for landscaping until after the deck has been built. Trying to build a deck with newly laid grass and not damaging it is near impossible. Always get you building work done before landscaping.

For a free no obligation quote on your decking requirements in Durban please call us on 082 496 5444 or use the contact us form below.

Composite Deck Boards vs Hardwood Balau Decking

I’ve often been asked to quote, on or at least comment on, composite decking. Firstly we need to have a look at what composite deck boards are.

Composite deck boards are generally made from plastic and saw dust which can be anything from saw dust, wood chips to wood fibre pieces or bamboo. They can be either be new or recycled materials. One method of manufacturing composite deck boards is by extrusion. That is the materials are mixed together and forced through an opening to create a relatively consistent size and shape. Compression moulding is the other method used and consists of taking the combined liquid materials and compressing them under high pressure and heat into a mould to create the deck board.

Composite boards cannot be used as structural material as they do not have the required structural properties of, for instance, S5 SABS approved structural or industrial grade treated pine, or balau for that matter. As such the substructure of a deck still needs to be built using H3 CCA Treated pine. If the argument is that composite decks will last longer than solid timber, then half that argument is invalid because the structure is not made from composite materials. It is only the deck boards that are from composite materials and cannot “rot” in the traditional sense. However composites can fail if the process they underwent was not sound. There are various failures that can occur. A search on Google for “composite fails” will return many ways these boards can fail from a sub standard manufacturing process to fading in extreme direct sunlight, to warping, cupping or twisting due to heat from the harsh African sun.

Sustainability and “eco friendly” is often used as an argument in favour of composites. The balau and pine we use in decks is from sustainable forestry and is certified as such when imported or harvested locally. Producing composites also requires a lot of heat which is obtained from which source? So although composites can be made from recycled materials, one also needs to factor in the carbon foot print of making them, even though it is probably less than the carbon foot print of harvesting solid timber. Composites therefore do not carry a zero carbon foot print.

From a cost point of view composites are generally more expensive than balau. As with anything, you can get cheap or expensive and the risks of buying cheap composites speaks for itself. Some composites can be up to 4 times the price per square metre of balau. A cheap composite will tend to fail quicker as opposed to a more expensive one. If the cost of these boards is up to 4 times the price of balau then it stands to reason that  ALL the balau can be replaced up to 4 times before the cost becomes the same. It is highly unlikely that you will need to replace your deck surface four times in the life of the deck. What will commonly occur in a balau deck surface is that some boards will fail before others. Any failure of balau deck boards is normally long-term in any event. Deck boards are relatively easy to replace and relatively inexpensive. It is the structure that is expensive to replace and normally results in the whole deck having to be replaced. If our structures are both CCA treated pine in both types of deck, then the greater risk lies in the structure, not the boards.

The fixing system generally used to fix these boards to the pine substructure is a hidden screw of sorts and again there are various products available each one with it’s own advantages and disadvantages. A plastic clip is often used which is slotted into a groove routed along the edge of the board and then fixed to the bearer. Two boards often share a single clip which is then concealed below the deck board. So no screw holes through the face of the board. With the screw head being so small they can fail in that the screw can be screwed too far through the plastic clip. The clip itself is plastic and at certain temperatures will fail. The clip can only be guaranteed against failure below certain temperatures. In my opinion nothing replaces a Kalgard coated decking screw counter sunk through the face of a solid timber board to limit failure. In a balau deck, screw holes are filled with a clear epoxy and saw dust mixture so are not as visible as one would think once filled and sanded flat.

Scratches and fading in composites should be taken into account. A lot of manufacturers of composites guarantee a maximum percentage fade rate. How does one measure 10% fade? If a composite deck fades or gets scratched it can’t be sanded to remove these.

Maintenance of the deck is often used as an argument for using composites over balau. Water is largely drawn into wood through the end grain and not the face or side grain. Being balau it is naturally resistant to water ingression. If you take a 20 year old piece of good quality yellow balau and cross-cut it, you will most often find that no water has been absorbed through the board. Balau deck boards can be left un-oiled which will result in a grey appearance. Oiling or not oiling a deck won’t increase or decrease the life span of the deck by any material length of time. If oiled, maintenance is simple. Oil can be sprayed, brushed, wiped, sponged or even dipped. And oil won’t peel and flake. Coatings will. So it is quick and easy to maintain. If left un-oiled a pressure clean every 6 to 12 months is sufficient to keep your deck looking good.

Based on the above I am more concerned about the structure of a deck than the surface one uses. Structures are costly to replace. Deck boards are not. The above arguments for composites do not, in my opinion, warrant using them as opposed to balau.

We will however install a composite deck for you if you so wish, but I am not convinced that you will achieve the desired result by switching from solid timber to composites.

For a quote on your deck and other timber related structure please contact us using the contact us form below or call us on 082 496 5444.

Wooden Yellow Balau Deck – Kloof, Durban KZN

Here’s another wooden deck we built in Kloof, Durban which is similar to one we built in Hawaan Forest estate a few years ago. It has a fire pit with a U Shaped bench which double up as steps around it. These steps were designed so that they were wide enough to sit around the fire and with a riser that is not too steep to climb.

The substructure or frame was the normal H3 and H4 CCA Treated S5 pine we use. All our decks are built with an S5, H3 and H4 treated pine substructure. S5 refers to the grade of pine which is commonly called industrial grade. It is graded as such based on the number of knots per square metre. S5 is SABS industrial grade and has been passed by SABS to be used in construction. It doesn’t however make a very good deck board as there are too many knots which are not only unsightly but also they can become dislodged leaving a hole in the deck board. H3 and H4 CCA Treated refers to the hazard classification of the treatment as set out by The Wood Preservers Association of South Africa. Each H classification has a specific application and provided the correct H classified timber is used, the life span of the timber can be many more than 50 years.

The deck boards that went on top of the substructure were 19 x 68mm yellow balau deck boards. The other option for deck boards is 19 x 90mm yellow balau deck boards but they do carry a surcharge as they cost more per square metre than the 68mm wide boards.

There are two types of balau readily available in South Africa. Yellow balau and red balau. Yellow balau is more common and is superior to red balau. What we are seeing in South Africa nowadays which is called red balau is a lot more porous and softer and as such will absorb more water and rot more quickly. We only stock and use yellow balau.

This project in Kloof also included a pergola. What we have found to be most cost effective in pergolas is to use a 90 x 90 square balau post, 30 x 215 balau beam and 30 x 102 balau purlins or trusses at about 600 centres. This spec gives the pergola enough timber to be attractive and serve its purpose whilst still keeping costs down. With this particular job we also installed extra battens on top of the purlins. We used 30 x 40 balau for this purpose which again keeps costs down whilst still providing enough timber to keep it looking good and to do it’s job. Other options for battens on pergolas are to use a 30mm wide strip of balau with a 30mm or 60mm gap between. This provides more shade but of course comes with a higher price tag because more timber is being used.

The timber was sanded and sealed with an oil based sealer we use which doesn’t dry on the surface of the wood so it cannot peel and flake. Unlike other coatings which dry on the surface. These tend to peel and flake.

For a free no obligation quote on your wooden deck, pergola, balustrade and stairs requirements please contact us on 082 496 5444 or use the contact us form below.

Wooden Sun Decks Durban and Cape Town

Wooden decks Durban and Cape Town

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A wooden sundeck is a valuable extension to your house in that it is relatively cost-effective whilst still increasing the living area and total coverage of your property. If properly installed and maintained it will give you many years of warmth and enjoyment and you will retain the value of it when ultimately selling your property. It is more cost-effective than brick, concrete or steel and with the trend moving towards sustainable and green building, a sun deck, sourced from sustainable forestry will retain its value for many years to come.

We generally use CCA treated pine in our substructures as it is a lot more cost-effective than using balau and we are still able to offer a 50 year supplier guarantee on the timber used in the substructure. This is provided we document the build with photos, retention records from the treatment plant, the date and invoices of when we bought the timber etc. As a rule we build in accordance with their criteria for the guarantee, but if a guarantee is required, we must be notified beforehand so that we can obtain these documents during our build. We use balau deck boards on the surface of the deck because they are infinitely more stable and do not warp or twist as much as balau. This is not as important in the substructure because it is largely covered from the sun and the pieces we use are a lot thicker so don’t warp or twist as much. Deck boards on the other hand take the full brunt of the sun and tend to warp more quickly. Also we source our balau at very competitive prices and can therefore build a deck at very competitive prices, even compared to using pine deck boards. Pine deck boards are much softer so one has to use twice as much wood negating the cost saving by using a cheaper timber. The structural pieces in balau are more expensive per cubic metre than pine so using a CCA treated substructure reduces the cost which we pass on to the client.

We use kalgard screws which are guaranteed by the supplier against rust for 25 years, we counter sink them and close the holes using an epoxy and saw dust mixture to match the colour, thus eliminating water ingression through the screw holes thereby reducing rot at the screw hole. They are sanded flat and we seal our decks using an oil based sealer which penetrates the timber rather than leaving a coating or film on the surface. Maintenance is therefore easy and inexpensive. You simply wipe clean the timber, clean any greasy marks off with turps and re-apply using brush, sponge, cloth or spray.

For some expert advice or a quote, please contact us on 082 496 5444 or complete the contact us form below.

Wooden Deck, Umhlanga, Durban

Here’s a wooden decking project we completed in Hawaan Forest Estate, Umhlanga, Durban. There were two houses right next door to each other so it was a bit easier on the pocket when it came to travel to site. The whole job was quite big too, in excess of 200 square metres of coverage, so it was worth the travel from Home Base in Waterfall, Hillcrest.

House 1 consisted of a fairly large deck of about 80 square metres. It was an interesting deck to build in that it was built flush with the tiled covered patio, extending to the pool, with steps as wide as the deck leading into the garden. It incorporated a fire pit with step benches on three sides set slightly away from the pool. The front of the steps were clad so that beneath the deck was not visible. We met our deck boards at a 45 degree angle on the vertical cladding.

There were various smaller decks around the front of the house and the courtyard consisted of a steel frame and steel gate clad in balau deck boards. There was an interesting deck on the first floor of about 7 square metres that is accessed through a door on to the roof top. It is bordered by three sides of planter boxes surrounded by balau.

The garage doors were 6m wide and 2.7m high. The frame was made of steel and deck boards were used to clad it. It resulted in it being quite heavy but complimented the front of the house by following through with the wood cladding design so typical of Hawaan Forest Estate homes.

Along the front of the first floor are steel sliding screens of 14m x 3.1m high. The decks and courtyard screens were all done in 19 x 68mm balau reeded deck boards whilst the sliding screens on the first floor were done in 19 x 30 balau slat. In order to get a 19 x 30 slat we ripped a normal 19 x 68 deck board in half to 30mm wide. These were then attached to the steel with a 20mm screw from behind so that no screw holes are visible from the front.

Most deck boards are reeded on one side which allows water to dissipate more easily between the deck board and joist, so we had to source non reeded deck boards for this application. If it had been reeded the grooved side would have been visible from either the inside or the outside. Non reeded deck boards are not that common, but they are available, and it is cheaper to rip deck boards to 19 x 30 than to buy 20 x 30mm slats.

House 2 had a much smaller pool deck of about 25 square metres. It was fairly intricate though in that the deck had to be tucked underneath the wall on one side and beneath the tiles of the pool fascia. The patio above the pool had a fall to it to allow water to run off, so the edge of the deck could not be level, otherwise it would have resulted in a stepped join between the wooden deck and the patio. There are also a few smaller decks surrounding this house and it too has a 13m long by 3.1m high sliding screen system in steel with balau 19 x 30 slats.

I will update these pics above once other contractors have completed their areas of work to give you a good idea of what is possible in timber decking and screening.

For a quote, and design, of your wooden decking and screening requirements, please call us on 082 496 5444 or use the contact us form below.

Wooden Decking Companies in Durban

wooden decking companies durban

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There are many wooden decking companies in Durban that one can choose from when planning to install a wooden deck. Some are reputable companies and some are not, as in any industry.

Besides comparing price one should always compare services to make sure you are comparing like quotes. Some wooden decking companies in Durban for instance will offer to build you wooden deck as well as seal it and other will only quote to build it. Some will offer to fill the screw holes with epoxy to stop water getting in them which will cause rot and others won’t. It is these small things that one needs to ask about and make sure that the service being received from one wooden decking company in Durban is the same as the other that you are comparing to.

Our service at The Wood Joint, includes the following: –

Building the deck with quality yellow balau. We generally build our substructure out of H3 and H4 CCA Treated pine. This is not only due to a cost factor but also because the pine is correctly treated to H3 CCA level which has a life span of at least 50 years exposed to the elements. You can expect to pay about 40% more if you chose a balau substructure. H3 CCA Treated pine is guaranteed for 50 years if used in the correct application and installed correctly.  It will therefore outlast balau as a substructure because the balau is not, and cannot be, pressure treated. I have often seen balau joists rotting from the top where the water gets trapped between the joist and the deck board. We always use balau deck boards as balau behaves better than pine on horizontal surfaces. Balau is a lot more stable and the pine tends to cup and warp over time with the constant hot and cold, expansion and contraction and occasional wetting.

wooden decking companies durban

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Our balustrades and stairs are all made from balau, unless otherwise specified, because if one uses pine as a balustrade, the pickets and cross supports need to be almost twice as thick as balau so they tend to look a bit too chunky. Balustrades do not work well in pine because of the knots found in pine which weaken the timber.

We use a kalgard decking screw which is guaranteed for 25 years by the manufacturer against rust. The screws are counter sunk and the counter sunk hole is filled with epoxy and saw dust so as to match the colour as closely as possible. Filling the screw hole stops water sitting in that hole and travelling up the deck board along the grain. Exposure to water for too long will speed up the rot process. So we fill it, sand it flat, and seal the deck using an oil based sealer which contains no wax. This makes it easy and therefore inexpensive to maintain your deck going forward. I have done a few refurbishment jobs where the decking company has not filled these holes and on the older decks, the deck boards have started to rot there. These are all standard services we offer which are normally included in the price we quote. So when comparing our quotes to others, please check what value added services they are offering you.

For a free no obligation quote on your wooden deck, pergolas, screens, walkways, etc. please contact us on 082 496 5444 or use the contact us form below.

Wooden Sundecks – Durban North

Wooden sundecks Durban North

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Wooden sundecks Durban North

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We completed these wooden sundeck jobs in Durban North last year during our busy decking season. There were two decks we built. They were both quite simple in that they were low-level wooden sundecks coming off the granny flat, which had just been refurbished measuring 5m x 2.2m.

The first one was a relatively small deck. It had two steps off the front edge with closed risers. That was probably the most difficult part of the job but we have worked out a way to build these quite effortlessly. We build the deck with a fascia beam on the front and then we build a box complete with supporting joists frame etc. We then attach this to the fascia beam of the deck we have just built and we are left with a frame which we can clad to create our riser and tread of our stairs. It is much easier to do it this way. Trying to build it piece by piece in situ is a lot more difficult and time-consuming. In fact building decks in sections and then hoisting them up into place is the easiest way to build as it allows you to work on a section of the deck on the floor, get everything square and then simply level it in place and attach it.  We had two concrete columns on the front edge of the deck so it was relatively easy to secure the deck and made for fewer posts and concrete.

Wooden sundecks Durban North

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The second deck was closer to ground level off the patio of the main house. Again we built this in sections and lifted them up to secure them to the wall and then secured the front edge with posts to ground using concrete. Because of the length of the deck (11m odd) we had to build it in two sections and lift each section up independently of each other. It becomes a bit cumbersome trying to lift an 11m deck into place. So it is better to build it in two sections and lift each one separately. You need to be careful though that the entire structure remains flat from one end to the other. By doing them in two sections it is easy to get a kink in the middle. So run fish line from one end of the one section to the far end of the other section and adjust the join to get the entire frame flat and level.

In another article I will describe the different methods used to screw the deck boards down. Again there is an easy and quick way or there is the slow process of marking and cutting each board individually. What one wants to do is to lay all boards out and snap chalk line where the cuts should be, then cut them all, put them back and secure them. There is another method too where you screw the boards down and then lift the ends that need to be cut and cut with a skill saw.

Wooden sundecks Durban North

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These two decks were sealed using Timberlife Satin Wood 28 Base, a sealer suitable for woods of low porosity. Being and oil based sealer it goes on very easily, cannot run or streak and when it comes to maintenance, you simply wipe clean and re-apply. You will need to do it a bit more often than other deck “sealers”, but there will be no more sanding as the oil cannot peel or flake like a coating does. It soaks into the wood, nourishes it, leaving the full natural look of the wood and simply disappears instead of flaking and peeling.

For a free no obligation quote on your wooden deck, balustrades, stairs etc. please call us on 082 496 5444 or use the contact us form below.