Cracked Lintel and Sill (tree damage)

May 21, 2016 7 Replies

It has been suggested to me that it would be possible to replace this stone lintel with steel or pre-stressed concrete for a 'reasonable sum' but I am also keen to preserve the symmetry of the building and thus retain the twiddly bits either side, etc. I imagine that reproducing said artistic artifacts (if necessary) would be excessively costly(?)



I (for whom this sort of stuff is a whole new adventure) can't even tell which parts are structural and which purely decorative or indeed how they fit together. Although, obviously, I don't intend to carry out any of this work myself I am very keen to learn about the process and materials, etc.



The damage, which clearly includes the sill has almost certainly been caused by the removal of a large nearby tree many years ago - the rest of this very thick stone walled mid-Victorian period (non-listed) building appears robust and stable.



How would you approach this repair job?



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All comments gratefully received!



IJM



On Saturday, 21 May 2016 14:44:36 UTC+1, profIJM wrote: The external part looks purely decorative.

Are you suggesting that the damage is caused by ground movement or by impact during the felling of the tree?

The cracks could be cleaned out very thoroughly and then when totally dry repaired with epoxy resin putty which is available for building repairs.

John

Replacing either or both of these would be extremely expensive in stone. It could be done by casting cill and lintel in situ in much thicker concrete with reinforcing steel.(But cheap as a DIY project.) Victorian builders never realised that the cill carries massive loading but the lintel much less.

The reason it has failed is the building has subsided in the past. Maybe the removed tree's roots have rotted away leaving voids.

The thing is to find out if the building is still moving. This is done by gluing strips of glass across the cracks. (You will have to scrape the paint off to get good adhesion.) If they break, it's still moving and you have a big problem. The cracks will get worse and something may even fall down eventually. You will have to take advice from a structural engineer, the building may need underpinning.

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You need to maintain the symmetry/appearance of this sort of building or it will have a major effect on the value.

A bit of filler. This kind of damage is common on old houses. The 2 halves of the lintel are both cantilevered at their outer ends, and aren't about to go anywhere. I'm sure folk will be happy to take your money though.

NT

+1.

If it's not moving significantly then a near invisible repair is not too difficult.

Fill it, paint it, forget it.

Is the correct answer.

Many thanks to all those who commented on my crack - I am most grateful. All will be taken into consideration.

Ta, IJM

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