Exclusive to SIG Design & Technology, the SIGnature range is a torch-applied built up roofing system for flat and pitched roofs which is robust, tried and tested. Intended for both new work and overlay projects and offering different warranty packages dependent on the underlay option selected. The SIGnature range will ensure that you can tailor the system to your client’s requirements, and come in on budget.
SIGnature is manufactured from reinforced bitumen membranes using polyester reinforcements with exceptional mechanical strength and dimensional stability. The reinforcements are impregnated and then coated with specially formulated SBS (Styrene Butadiene Styrene) modified bitumen or APP modified bitumen. Offering different warranty packages dependant on the underlay option selected.
Each membrane option comes with an EXT.F.AA fire rated cap sheet as standard, and a choice of different underlays determines the warranty period. A cold applied self-adhesive underlay is also available. An option of either torch applied or self-adhesive aluminium lined vapour control layers ensures a complete system:
SIGnature Underlay 25
A polyester carrier, reinforced, SBS, torch applied intermediate or base layer (dependent on specification). Using this underlay option will qualify for a 25-year warranty if used in conjunction with the SIGnature Fire Rated Cap Sheet.
SIGnature Underlay 20
A glass tissue carrier, reinforced, SBS, torch applied intermediate or base layer (dependent on specification). Using this underlay option will qualify for a 20-year warranty if used in conjunction with the SIGnature Fire Rated Cap Sheet.
SIGnature Underlay SA
An elastomeric self-adhesive, polyester fabric reinforced underlay. Coated with SBS modified bitumen that has a smooth upper surface that forms an ideal surface for bonding subsequent cap sheets and has a release film backing. Using this underlay option will qualify for a 25-year warranty if used in conjunction with the SIGnature Fire Rated Cap Sheet.
Please note these underlays can be directly applied to a torch receivable Insulation Board only, without the requirement of a venting base layer.
Key Benefits
- EXT.F.AA fire rated cap sheet
- Guaranteed for 20 or 25 years (depending on underlay used)
- Cap sheets, underlays and vapour control layers
- New work or overlays, warm or cold roofs
- Self-Adhesive VCL option
- Available in 2 colours of mineral finish, black or green
A Complete Flat Roofing Build-up
To complete a full roof build up, we recommend the below products to be used with the SIGnature Torch on System. However, please not additional products used to provide a complete system are dependent on specification and roof type:
FIX-R Universal Torch On Venting Underlay
To be used as the venting base layer on all overlays to bitumen substrates where a partial bond is required.
SIGnature Vapour Control Layer (torch applied)
To be used over a primed substrate beneath the Insulation to prevent moisture contamination.
SIGnature Vapour Control Layer (self-adhesive)
To be used over a primed substrate beneath the insulation to prevent moisture contamination.
FIX-R Quick Dry Primer
To be used to prime all timber and old bitumen surfaces prior to torch application.
IKO Self-adhesive Primer
To be used to prime the roof surface prior to application of the SIGnature self-adhesive VCL.
IKO Bonding Agent
Fast drying primer for adhesion of self-adhesive bitumen roofing membranes.
FIX-R Classic 180 Sanded
To be used as the nailing prep layer on a timber deck.
