As a FENSA member, we are obliged to assess the structural implications of the work we are doing on your property. If the replacement windows we are installing are wider than those they replace, or involve the replacement of load bearing bay windows, or there is evidence of existing movement in the brickwork above the window, then proper structural support is required above the window. In older buildings, the timber frame of the window was often sufficiently strong enough to carry the load of a wall or roof above it without a lintel. In these cases, either a lintel needs to be installed when the window is replaced, or the new frame fully reinforced to carry the load. We will advise you if this requirement applies to your installation, and if so what method of structural enhancement is the most appropriate ie) angle iron or full catnic lintel.
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