Critter quitter critter quitter small size plumbing vent repair for 2 1 2 in.
Ventilated lead roof.
Roof vents create an additional roof penetration essentially another place of vulnerability where leaks can occur.
For instance a lead bay on a roof with a pitch of up to 3 degrees differs in.
Airtrak assists specifiers builders and specialist contractors in helping them to meet the requirements of the building regulations in relation to the important issue of roof void ventilation and the control of condensation.
All lead sheets should be laid onto a through ventilated substrate.
Soffit vents are one of the most popular intake vent styles.
That means the decking which supports the lead sheet should have a minimum of a 50mm through ventilated void underneath the decking and the ventilated pathway should have no stagnant air pockets.
Lead flashing 1 1 2 in.
Insufficient ventilation can lead to moisture problems during the winter and decreased energy efficiency during the summer but too much ventilation can be just as bad if not worse.
Vents model cqssm1 30 00 30 00.
For guidance on the amount of ventilation required reference should be made to british standards 5250 and 6229.
Continuous or individual soffits.
They are easy to install under the roof s overhang which is known as the soffit are generally hidden from sight and provide excellent protection from weather outdoor debris and pests while still allowing air to flow into the attic.