The undercloak is a cement board which may contain asbestos.
How to install roof undercloak.
The undercloak is layed on a flat bed of cement and projects over the verge edge by 2.
Point it up when setting.
The overall verge looks fine otherwise.
Lay felt and batts to 2 from verge edge.
I noticed that there are 2 vertical thin cracks in the mortar of the roof verge near the top.
You will need to ram the mortar in well then point up.
Roof undercloak installation roof undercloak installation overview.
Secure the underlayment with nails that are at least 2 inches from the edge of the roof.
Also at the lowest end of the verge where the slope finishes and the verge becomes flat there is no undercloak beneath the mortar.
Universal undercloak a core component of any roofing project undercloak is a strong tile or fibre cement strip that is fixed at the roof verge beneath the battens.
If your roof has a steep slope install the battens next which are thin strips of material that run horizontally along the roof.
The concrete tiles have a cement pointed undercloak to gable ends.
If you delay the risk of timber decay and slipped tiles will increase.
To begin remove the old roof tile.
Cutting and positioning pieces.
A mortar bedded verge that is done correctly should last as long as the roof tiles or slates.
You should carry out repairs soon.
Bargeboards and in some cases gable end brickwork are prone to deviation in.
Plain tiles are not normally suitable for nailing as undercloaks and so the following applies to.
You might be lucky and leave roof tiles in situ remove under cloak and existing mortar and try to push the board in.
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Install the underlayment for the new roof tile next working with 10 foot sections at a time.
The cement pointing is cracked and porous.
A roofer told me to.
This will provide an effective underlayer to support a bed of mortar and allow for mortar adhesion whilst also offering a clean finish to the verge detail.
Fibre cement undercloak is used on roof verges to support a bed of mortar allow mortar adhesion.
20 year old house.
Place a good bed of mortar on at a 3 in 1 mix i would add some glass fibre strands in the mix to help prevent cracking and give it strength.