Sikashield Hot Melt Structural Waterproofing System

Approved for use on

Flat Roofs Green Roofs Inverted Roofs Protected Roofs Roof Gardens 

The Sikashield Hot Melt Structural Waterproofing System is satisfactory for use as a protected waterproofing layer on flat roofs (including those with zero fall) and podiums with limited access in:

• inverted roof specifications
• protected roof specifications, eg covered by paving or other suitable protection
• green roofs (extensive) and roof garden (intensive) specifications.

Durability

Design Life of the Roof 

The system, when fully protected and subject to normal service conditions, will provide an effective barrier to the transmission of moisture for the design service life of the roof in which it is incorporated.

In situations where maintenance or repair of any of the components in the roof structure is necessary (eg the protection layer or insulation), the waterproof integrity of the membrane may be reduced. In these circumstances, the Certificate holder should be consulted.

An estimate cannot be given for the life of green roof and roof garden specifications owing to the nature of use. However, under normal circumstances, it should be significantly greater than for open coverings.

Installation Requirements

The system must only be installed by contractors who have been trained and approved by the Certificate holder. Details of these are available from the Certificate holder.

Fire Safety

In the opinion of the BBA, a roof incorporating the system will be unrestricted under the national Building Regulations in the following circumstances:

• protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Requirements
• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil layer 300 mm thick
• irrigated roof gardens and green roofs.

The designation of other specifications should be confirmed by reference to the documents supporting the national Building Regulations.

If allowed to dry, plants used in roof gardens may allow flame spread across the roof. This should be taken into consideration when selecting suitable plants. Appropriate planting irrigation and/or protection must be applied to ensure the overall fire-rating of the roof is not compromised.