Unless the damage is minor the usual remedy is to replace the entire valley from.
Repointing roof valley.
How to repair a crack in a wall.
This video shows how to re point the lead valley on a tiled roof safely using fibre reinforced mortar.
Category general diy videos tags re point lead valley lead roof valley.
Here are two before and after photos of a valley with newly laid.
Roof cement is primarily used to hold roof tiles hip tiles and ridge tiles securely in place it also keeps out rainwater.
There are occasions when a roof valley is in good condition but the cement holding the tiles in place has washed out or crumbled.
Needless to say a roof leak in a valley can lead to litres and litres of water entering the property.
In these circumstances it may be possible to just leave the existing valley base in place and replace only the cement.
By admin 4 years ago 1 817 views.
The only material that will seal your valley is a good quality cement if you want it to leak by all means use expanding foam.
This is how i cement roof tiles pointing the verge in with two coats of cement the cement i use has black dye mix in it to help match the roof tiles in colo.
Repointing is basically a waste of time money what you should do is take out all the cement and re bed the tiles if done properly should last at least ten yrs.
Roof re bedding roof re bedding a tiled roof re bedding a hip cement repairs to ridge capping re pointing only minor repairs and full pointing the bedding or cement work under most of the ridge capping gables and valley may still be quite hard and not need to be pulled up.
Roof repointing rebedding guaranteed roof repair services our full range of roof services includes repairs and full restoration for all roof types whether it be tile slate or metal.
This is called roof re pointing.
The correct mix ratio is 3 parts sand to 1 part cement this is much stronger than bricklayers use 5 1 as the cement on the roof must withstand more driving rain than a typic.