Butylclad, Epiclad and Epiclad FBS Roof Membranes
- Abbreviation
- Appraisal number 307 (2024)
- Valid from
- 1/07/2024
- Information provider
- BRANZ Limited,
- Information type
- BRANZ Appraisal,
- Format
- PDF,
Description
Butylclad, Epiclad and Epiclad FBS Roof Membranes are synthetic rubber waterproofing membranes designed to be used on roofs, decks, balconies, parapets and gutters.
These products are supplied as single-ply, flexible synthetic rubber sheet in roll form and installed as single-layer systems.
Scope
1. Butylclad, Epiclad and Epiclad FBS Roof Membranes have been appraised for use as waterproofing membranes for buildings within the following scope:
- scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
- with timber supporting structures designed and constructed in accordance with the NZBC; and,
- with nominally flat or pitched roofs constructed to drain water to gutters and drain outlets complying with NZBC; and,
- with substrates of plywood sheet; and,
- with decks that have a maximum size of 40 m2
2. Butylclad, Epiclad and Epiclad FBS Roof Membranes have also been appraised for use as waterproofing membranes for external reinforced concrete and plywood roofs and decks for buildings within the following scope:
- up to 3 storeys with a maximum height from ground to eaves of 10 m and with a floor plan area limited only by seismic and structural control joints; and,
- with the reinforced concrete structure designed and constructed in accordance with the NZBC; and,
- with timber supporting structures designed and constructed in accordance with the NZBC; and,
- with nominally flat, curved or pitched roofs constructed to drain water to gutters and drain outlets complying with the NZBC.
3. This Appraisal is limited to roofs and decks within the following scope:
- constructed to suitable falls (refer to Paragraphs 12.1–12.9); and,
- with no steps within a deck level, no integral roof gardens and no downpipes discharging directly onto a deck.
4. The design and construction of the substrate and movement and control joints is specific to each building, and therefore the responsibility of the building designer and building contractor and is outside the scope of this Appraisal.
5. The membranes must be installed by trained applicators, approved by Viking Roofspec.