Glidevale Protect A1 T3 Plus - Impermeable Roofing Underlay

Protect A1 T3 Plus is a heavy-duty type HR roofing underlay, designed for all cold and warm pitched roofs in conjunction with the provision of ventilation at eaves and ridge. The product can be used with a well-sealed ceiling and a separate air and vapour control layer on the warm side of the insulation or where the ceiling is not well-sealed as in a re-roofing application.

Features and benefits:

• Fourth generation high performance underlay originally developed to overcome disadvantages of traditional Type 1F and 5U felts and second generation plastic sheet materials.
• Regularly used for new build and re-roofing schemes.
• Completely air and watertight, achieving >2.0 m hydrostatic head of water resistance.
• Has ‘unrestricted’ wind uplift resistance across the UK and Ireland at 345 mm batten gauge (2094 Pa) without the need for additional sealing tapes.
• Excellent nail tear and tensile strength.
• Easy to cut and handle, saving time on installation over traditional felts.
• Does not generate nuisance noise under wind loading.
• Absorbent under surface prevents condensate drip off.
• UV and heat resistant.