Timber beam-end engineering repairs - Cupola Repair

Click on any of the images for a larger view.

This is a resin repair to the base of a cupola's supporting legs during a refurbishment by a major building contractor. It came to their attention that the original leadwork had cut into the timber legs, allowing water ingress. The main problem was the resulting wet rot.

The cuppola's legs.

The lead work was dressed down and the rotted timber cut out, back to sound wood. You can see the rot as a dark shadow on the remaining legs.

The cupola legs were made out of four sections of timber. The joints of the sections had to be sealed to prevent resin loss using a quick setting paste.

Detail.

Next a plastic shutter was wrapped around the legs, sealed and fixed.

What is not seen here is the heating of the resins prior to the cartridge filling. It was below zero - very cold for resin repair work!

All escape holes were drilled above the repair line to allow for complete filling of the cut out.

Completion of resin pour. All air holes and injection holes are fully sealed.

Completion of resin repairs and insulation. This was left for four days to allow the resin to cure.

Upon completion of the injection, it was very important that the resins were kept warm. Here we insulated the resins with standard rockwool.

Once cured the insulation and the shuttering were removed, leaving a bolck of resin ready for the lead workers.

Finished job.