This is a 10' x 10' Titan "R" Type greenhouse we fitted to a very old sandstone outbuilding. The whole garden had been extensively remodelled this year and a brand new block base had been laid in preparation for the greenhouse. Fitting was not particuarly straightforward unfortunately as the wall although solid was not perfectly flat, vertical and true!
To build a greenhouse against a wall you basically need a flat wall that is 90° to the ground alongside it. Often the ground slopes away which is generally a design feature to allow water to drain away from the building, this causes a problem as the glass is always 90° and needs a frame built at exactly 90° to accommodate it. On this occasion the new base was absolutely perfect, however the old wall leant out at the top by around an inch and even at the top there was a distinct bow along one of the eaves bars. We worked alongside the landscape contractor who had done a fantastic job with the garden and the base and worked out a plan of action.
The only support for the back of the greenhouse roof is the wall and as this was proud of the base it was not too difficult to grind the bulging section of the wall in the centre away to create a flat surface for the entire greenhouse roof to screw to. All this left was the vertical sides being set slightly away from the wall which our landscaping friend filled in after the installation. The alternative method would have been to construct a timber framework to true up the wall. This would have been a particualrly challenging task for a competant joiner and would have needed tanalised timber accurately tapered and fitted against the wall which would also heve needed ongoing treatment to prevent rot. I believe the method we used has kept the look of the wall intact and the greenhouse has blended in superbly with the old building.
I would like to thank Luke who runs Wren Fencing and Landscaping Ltd. for all his help and assistance and especially for choosing us to work alongside him in creating a truly magnificent garden. https://wrenlandscaping.co.uk