Slate Roof Valley Construction

Part 3 of the four part guide to roof construction covers pitched roof detail.

Slate roof valley construction.

With your wider slate in hand rotate it 180 degrees so it can be marked for cutting. Calder lead sheet and flashing conforms to the new european standard. Slating terms and phrases if you are not a seasoned roofer some of the terms used for slates batten spacing or overlapping of the slates can add to the confusion. To get the most out of it is helpful to also read parts 1 and 2.

The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters. Important 4 this booklet is a guide to the correct detailing and fixing of lead sheet flashings weatherings and. The slate roof bible joseph. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.

We describe how to construct three common styles of roof valley. Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings. We have used north country black on a large number of occasions and we ve found it to be an excellent quality slate it is very workable. Preformed mortarless valleys the roof construction for mortarless valleys is similar to that for open grp valleys.

Valley gutters 19 box and tapered gutters 20 secret gutters 21 flat roof coverings 22 window flashings 23 contents note. Bs en12588 replaced bs1178 in august 1999. Slate roof central basic instructions on how to install slate roof hips and ridges slate roof central is your center hub for all things related to natural quarried slate roofing. Open valley closed cut valley and woven roof valley and we include roof valley underlayment and nailing specifications.

When installing slates along the valley it is important to place the nails so they do not puncture the valley flashing. Here you can find instructions for installing a slate roof repairing and restoring slate roofs and repairing asbestos roofs and ceramic tile roofs. Part 1 a guide to roof construction covers an overview of flat and pitched roofs. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet.

Wider slates or slate and a half are necessary to help with nailing away from the valley metal. When our clients are looking for a natural slate roof we highly recommend north country slate. A roof valley is very prone to leaks especially if you have an older roof. Grp valleys have pre formed upstands to prevent the ingress of water and for mortar bedding some have integral sand strips to ensure a good adhesion between the mortar and valley lining.