Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
Should roof valleys be pointed.
A house with an l shaped or t shaped footprint for example always will have roof valleys where the two sections of the house meet.
Some homeowners prefer the consistent look that a woven valley provides.
I had it repointed again in october 2014 and it has fallen out again from under the roof tiles.
The upstands or tilting fillets at each side of the valley are an important feature of good valley construction as they keep the water within the centre area of the valley.
Never try and work on a roof from a ladder as a.
The upstands will prevent water ingress even if the mortar is missing or damaged.
I mark the shingle where the valley center crosses the top edge and i mark the roof at the top outside corner of the shingle.
After about a year the pointing from one of the valleys fell out.
Then it has to be reinstated after the valley change.
I had my roof retiled about 6 years ago.
Nrca lile points out that woven roof valleys are limited to cutout style 3 tab asphalt roof shingles as there are no openings to weave solid or architectural or dimensional or laminate style asphalt shingles together and he adds that the valley s slope should be at least 4 in 12 or steeper installed typically over a layer of mineral granule faced roll roofing.
To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together.
This video shows how to repoint a lead roof valley.
I had it repointed but it fell out again after another year.
To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof.
The valleys on many older houses comprise layers of roofing paper which can deteriorate over time.
To change a valley on a tiled roof the ridge capping at the top of the valley has to be removed.
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.
A scaffold tower has been used for access in this video.
Nevertheless they are often omitted from lead valleys.
I suspect it has never been done properly each of the 3 times it has been pointed.
