Roof Torching Mortar

Both are there to stop wind.

Roof torching mortar.

This system was commonly known as torching and was used before the introduction. Surveys of thatched roofing. It is common for the torching to deteriorate and for pieces to fall away from the inside of the roof. In the days before roofing felt torching or lime mortar was used on the underside of tiles or slates to keep them in place and to prevent strong winds from getting under the tiles and lifting them.

Timber oak or elm what not to do to a timber frame. Is your roof covered with clay tiles. Torching is still used today in heritage properties as an alternative to a modern breathable membrane. Impartial advice on damp and damp.

Goodwill feb 27 2009. The dangers of rusty iron in old buildings. Traditional variations of a physical secondary barrier against wind driven snow and rain include reeds laid between the tiles and the battens and a coating of mortar known as torching to the underside of the tiles or slates. Mixing and making hot lime mortar.

A word about timber treatment. There are 2 usual variations of lime mortar iside the loft space if it is torched it is basically rendering the inside of the roof or semi torched is pointing to the battens. Traditional buildings did not have bituminous underfelt beneath the slate or tile roofs. This may applied as either a repair to hold slipping slates or pre emptively on construction.

Instead a soft sticky mortar mix was used both to help secure the slates and also prevent draughts. A common repair to slate roofs is to apply torching a mortar fillet underneath the slates attaching them to the battens. In the days before roofing felt torching or lime mortar was used on the underside of tiles or slates to keep them in place and to prevent strong winds from getting under the tiles and lifting them. What materials should be used in old houses.

Torching is most commonly encountered to the underside of old stone slate roofs. Originally the only recognised roof under coating was the application of sand lime mortar reinforced with animal hair applied to the headlaps of double lapped slates or tiles. This mortar and the process is called torching. Where slates are particularly heavy the roof may begin to split apart along the roof line.

Unusual for a house built in the thirties.