Rebuilding the seat in a glass box window

In this glass box window the seat is the bottom of the box. Take it up and you are looking at the stones outside.

This one, in Bounds Green, came out completely. Here is how it went back together, from the bottom up.

Old seat out

The old seat came up, down to the base. Along the glass the old base was dark and breaking up.

Measured up

Before cutting any new timber I measured across the old frame, between the old timbers and into the corners.

New timbers

New timbers went in across the seat. Look through the gaps in that second photo and you can see the stones outside, which is why the next two steps matter.

Insulation

The spaces between the timbers were packed with insulation.

Insulation boards

Over that went a layer of foil-faced insulation board (EcoTherm, it says on them), laid between battens across the whole seat.

Boarded

Then boards over the top, fixed down and ready for the top.

Top on, level

The new top went on last. I checked it with the level along its length, by the glass and along the front edge. A seat next to a big straight window frame shows any slope, because your eye has a straight line right there to compare it with.

From the room it now looks like a plain ledge. All the work is underneath it.

See every photo of this job, build photos included.

The job page also has a 3D model of the seat, drawn in SketchUp at standard sizes, not measured. Show the layers to see the timbers, insulation and boards under the top, or take it apart piece by piece.