Balau pool deck and walkway – Kloof, Durban

This slideshow requires JavaScript.

We engaged with Masslandscapes, a landscaper and garden designer (082 468 3759) on this balau pool deck project in Kloof, Durban to provide a solution for the client who wanted an area alongside their pool that they could utilise more. Before the project started there was the standard paved area of about 1m alongside the pool which was bordered by grass of about 1m and then a flower bed, before dropping down a small bank to the rest of the garden. The client wanted to increase the size of usable area alongside the pool.

Initial designs were to have a very similar layout as per the pics above with a semi-circle sort of node protruding over the bank to gain height and create a look out area overlooking the Kloof Gorge. This proved to be out of budget and would probably have resulted in doubling up sitting area as there was already a large tiled verandah extending out from the living area doors. The final design was settled on which is what you see in the pics.

We needed to excavate some of the garden down and move this top soil for use in another area of the garden. It is always recommended that sufficient space be left below the deck and below the bottom of the lower most bearer or joist to allow enough air flow to dissipate and evaporate any water that settles below the deck. Too often I have seen deck boards rotting prematurely due to insufficient space being left below. Water gets trapped below and the underside of the deck and structure remains damp. I normally recommend at least 150mm below the lowest point of the structure. Once we had enough space below we installed our structure using H3 CCA treated pine. Please see here for an article on the use of CCA Treated pine as structures for decks and balau as deck boards. All cut ends of treated pine, as a matter of course, are re treated with an approved end sealer. When a CCA treated piece of pine is cut it exposes a section that is not treated and can accelerate rot.

Post to ground are set in concrete and installed at the correct distance on the bearers to stop any bounce in the bearer and to provide enough support to prevent the bearer breaking. There are guidelines supplied by engineers for distances that these supports need to be installed. These posts need to be H4 CCA treated pine as they are in constant contact with wet soil.

A lot of this job involved lining up existing paving, pool copings, patio etc. to the deck so the lines were seamless and everything ties in neatly. A walkway, as can be seen from the pics, was created to run alongside the existing raised patio for access to the rest of the garden.

In finishing our decks we fill the screw holes with a clear epoxy mixed with saw dust to match the colour as closely as possible and then grind and sand it flat. Standard wood filler doesn’t quite do the trick and fails with exposure to weather. The filling of screw holes is a very important aspect of deck building. It prevents water sitting in the counter sunk screw hole which would then travel up the end grain of the balau and cause early rotting of the balau deck boards. We use a clear epoxy so that we can match the colour to the deck boards. Off the shelf epoxies are either grey or white in colour and don’t take the saw dust that well to match the colour. Also these epoxies dry very hard. It is better to use an epoxy that is semi pliable when dry. Through seasons of dry and wet, hot and cold, the inside diameter of the counter sunk screw hole will vary ever so slightly. If the epoxy has dried too hard it will cause it to pop out leaving a weak spot on the balau deck board. During maintenance intervals these should be checked and replaced if they have in fact popped.

The deck was oiled using a zero wax content product. The beauty of oil is that it soaks into the wood and therefore cannot peel and flake. A peeling deck is an expensive deck to maintain because you would need to sand off the coating completely to avoid a patchy finish when re-applying the coating. Whereas an oil simply degrades due to exposure to UV over time. A pressure wash and re-oil is all you need to do at maintenance intervals which is relatively inexpensive and easy to do as opposed to sanding the deck again. The oil also allows the natural beauty of the wood to shine through resulting in a more natural wood looking product. Coatings give them the effect of a painted deck especially over time when layer after layer has been applied.

For a free no obligation quote on your timber balau decking, walkways, pergolas and other outdoor timber products, please call us on 031 – 762 1795 or use the contact us form below. We operate throughout KZN.

Wooden Balau Decking Companies in Durban

This slideshow requires JavaScript.

 

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 031 – 762 1795 or use the contact us form below.

Wooden deck in Massaranduba, Hillcrest, Durban

This deck was built with Massaranduba. Although Massaranduba is about 30% more per square metre than balau the client insisted on it as it is a much harder and denser wood than balau. As such it will last longer. It has a slight reddish tinge to it. This deck is to be left unsealed so will eventually turn grey / sliver. Therefore one will not notice that is massaranduba, but it will last longer. When choosing between balau or massaranduba one needs to weigh up the difference in cost vs. the longevity of both timbers. There is nothing wrong with balau, it will also give you a long life span. Massa is of a better quality and will therefore outlast balau.

We decked around the pool flush with the tiling on the patio which resulted in a single 90mm deck board being used as a fascia on the inside of the pool. Hence the difference in height between the water level and the deck is not that great. Often the deck can come up too high resulting in a big step up to the deck from water level. The pool therefore needs to be set at the correct height, in relation to the patio, to accommodate the deck at the correct height.

A quick note on new pool decks. The hardwood typically used in decking contains tannins which leach out when it rains. Storing them on a tiled surface almost always results in stains being left on the tiles after a downpour. Likewise one needs to be careful of installing the fascia on the inside of the pool, or deck boards that are installed on the pool’s edge, prior to filling the pool with water. If there is no water in the pool and it rains, these tannins will leach out and run down the new marbelite pool surface, staining it. The only way to get rid of the stains successfully is to sand it off. It is advisable therefore to get the pool done and filled before decking up to the sides of the pool and installing the fascia board. Alternatively, don’t marbelite until these tannins have completely leached out. It’s a tricky one because the pool contractor doesn’t want to marbelite until the lawn is done because of dust. The landscaper normally comes last, so it’s a bit of juggling that is required.

We decked around a circular concrete slab which is to be a fire pit and up to the edge of the brick and plaster bench around the fire pit.

We also installed a small pergola above the sliding door and included a small bar counter that can be accessed from both sides of the patio and deck. There was also a small decked area at the back of the house next to the fish pond and a screen on the front of the house.

For the screen we used a 20 x 30 slat instead of a normal 19 x 68 deck board. Although a 19 x 68 deck board works well as a screen, a narrower piece (30mm) with a smaller gap is a bit different and not the run of the mill timber screening. Although it is slightly more expensive than a normal 68mm wide deck board screen, it is very effective.

All in all a very nice job to work on and a pleasure to work with Massaranduba. It is lovely stuff. Hard as nails and long-lasting.

For a free no obligation quote on your wooden decking, pergola or screening needs in Durban or Cape Town, please call us on 031 – 762 1795 or use the contact us form below.