This wooden balustrade we built in Everton Kloof, Durban was for an established client of ours that we have done various amounts of work for in the past. She had had some stairs built in brick and concrete down the bank to access the lower level of her property. We had to wait a few weeks in order for the concrete to cure properly before we drilled into the side of it. It is always a pleasure installing a wooden balustrade onto a concrete substrate as opposed to a brick or block substrate. With concrete your holes can be drilled easily and the sleeve anchors used to secure the posts to the side of the stairs take nicely and bind properly. When drilling into bricks, or even worse blocks, the cavity that exists in the brick or block almost always creates a problem in that the sleeve anchor has nothing to set itself against and ends up turning on itself and not binding properly. It is most frustrating and sometimes results in drilling new holes to find a solid substrate or even going the chemical anchor route. If one is drilling into blocks with large cavities, it is sometimes better to go the chemical anchor route from the beginning.
Chemical anchors come with sleeves that are inserted into the holes first and then the two-part chemical is squeezed into that and then a thread bar is inserted. The chemicals dry very quickly, in a few minutes or less, and the thread bar is then fixed securely in the wall. A post can now be pre drilled and inserted over the thread bar and washers and nuts fastened onto that. It is a much stronger bond than sleeve anchors, albeit more expensive. Currently chemical anchors can cost about R300-00 per tube, the size of a tube of silicone, and the sleeves are about R15-00 each.
This wooden balustrade needed to have a bend in it that can be seen from the pictures alongside as the top tread was deeper than the rest of the treads. There was a small landing at the top where the balustrade needed to be level with ground. This was the normal vertical picket style balustrade and we sealed it using our favourite Timberlife Satin Wood Base 28 in a mahogany tint. Using this product will result in lower maintenance costs going forward as no sanding will be required when re-sealing. You simply clean and re-seal.
Balustrades are not the easiest thing to install. One needs to be very careful that both rails are parallel to each other and that they are parallel to the tips of the risers. Of course the tips of each riser will not necessarily be in a straight line. What we do is run a straight edge or fish line across all the risers to get an average line that we work from. The lower rail is then set parallel to this line and the top rail and hence the capping is set to this, again parallel. One also needs to be careful when taking corners. Often the distance between the capping and the steps can vary, especially if there is a landing involved. Where a balustrade arrives at a landing one needs to step the balustrade so that the capping will remain at the 1m mark above ground.
For a free no obligation quote on your wooden balustrades or other timber construction, please complete the form below and I will contact you or you can contact us on 082 496 5444.