Infrequent maintenance access on to an exposed Sika-Trocal membrane surface roof, such as for the regular biannual inspection of rainwater outlets, checking security of flashings etc, can be carried out without any special precautions. It should be noted however, that when wet, Sika-Trocal can be slippery underfoot and that appropriate footwear should be worn.
In situations when there is plant that will need frequent inspections and/or maintenance on the roof i.e. regular foot traffic, then precautionary measures are required to contain the potential effects of that traffic on the thermal insulation and waterproofing.
To provide that protection Sika-Trocal provide two options of purpose made walkway materials. On most ballasted roofs, walkways would normally be created with rows of pavers, as gravel ballast is unsuitable for foot traffic. Note that even with the provision of walkways, exposed membrane roofs are not intended or suitable either as fire escape routes or for public/leisure use.
Sika-Trocal Product: Walkway
Sika-Trocal Walkway is a protection sheet made of polyvinyl chloride (PVC) containing ultraviolet light stabilisers and flame retardant.