Slates off and the opening formed — 2025

Extensions, loft conversions and garage conversions

We do the structural work and the finishing: steels and joists, the roof opened up and made watertight, the shell framed, then plastering, joinery and the room handed over finished.

Slates off and the opening formed — 2025

What happens, and in what order

Every job runs a bit differently. This is one rear extension, start to finish, in the order it happened.

Timber frame up and wrapped, the door opening formed
Timber frame up and wrapped, the door opening formed

The frame up on the slab

Sole plate down on the new slab, the studs up and boarded, and the door opening formed. Once it is wrapped it is weathertight enough to keep going inside whatever the day is doing.

The roof on, and the opening for the roof light

Rafters on, the deck boarded over, and the opening for the roof light cut and trimmed before the roof is covered. It is easier to get that right now than to cut it in afterwards.

Roof deck boarded, the roof-light opening cut
Roof deck boarded, the roof-light opening cut
Inside the frame, roof light in, before boarding
Inside the frame, roof light in, before boarding

Inside the shell

The same room from inside, before the plasterer. Every stud, joist and noggin is in and the roof light is already doing its job. What you see here is what holds the finished room up.

The outer skin

Block outer leaf built up off the foundation and the window in. From here it is render outside and plasterboard inside.

Block outer leaf up, window in
Block outer leaf up, window in
Roughcast on, fascia, gutter and downpipe fitted
Roughcast on, fascia, gutter and downpipe fitted

Rendered and finished outside

Roughcast to match the house, fascia and gutters on, the downpipe in. The outside gets finished first so the scaffold can come down.

The finished extension: vaulted ceiling, roof light, french doors to the garden

And this is the room at the end of it

The same extension, plastered, painted and floored. The roof light you saw being cut in above is the one lighting the room. The same men who put the frame up finished it.

Garage conversions run the same way: opening built up, floor and walls insulated and framed, then plastered and finished as a room.

A bigger one, before and after

The back of the house before, and the same view after: a single-storey rear extension with wide sliding doors, and a dormer added to the roof.

The back of the house before the extension
The finished rear extension with sliding doors and a dormer above
Before — the back of the house After — the rear extension and dormer Click to see it finished

One team, the whole job

You are not chasing four trades. The building work, the joinery, the plastering and the finishing are all ours, and we bring in what we need for the rest.

  • House extensions
  • Loft conversions
  • General building work
  • Plastering & finishing
  • Joinery & carpentry
  • Plumbing & electrical work

Based in Stepps, Glasgow. We work across the Central Belt — Glasgow, Falkirk, Coatbridge, Airdrie and the towns between.

Get a price for your job

Send us a message with what you are planning, or ring and we will talk it through. If it is a bigger job we will come out and look at it before we price it.

Slates off and the opening formed

Extensions, loft conversions and garage conversions

We do the structural work and the finishing: steels and joists, the roof opened up and made watertight, the shell framed, then plastering, joinery and the room handed over finished.

What happens, and in what order

Every job runs a bit differently. This is one rear extension, start to finish, in the order it happened.

Timber frame up and wrapped, the door opening formed
Timber frame up and wrapped, the door opening formed

The frame up on the slab

Sole plate down on the new slab, the studs up and boarded, and the door opening formed. Once it is wrapped it is weathertight enough to keep going inside whatever the day is doing.

Roof deck boarded, the roof-light opening cut
Roof deck boarded, the roof-light opening cut

The roof on, and the opening for the roof light

Rafters on, the deck boarded over, and the opening for the roof light cut and trimmed before the roof is covered. It is easier to get that right now than to cut it in afterwards.

Inside the frame, roof light in, before boarding
Inside the frame, roof light in, before boarding

Inside the shell

The same room from inside, before the plasterer. Every stud, joist and noggin is in and the roof light is already doing its job. What you see here is what holds the finished room up.

Block outer leaf up, window in
Block outer leaf up, window in

The outer skin

Block outer leaf built up off the foundation and the window in. From here it is render outside and plasterboard inside.

Roughcast on, fascia, gutter and downpipe fitted
Roughcast on, fascia, gutter and downpipe fitted

Rendered and finished outside

Roughcast to match the house, fascia and gutters on, the downpipe in. The outside gets finished first so the scaffold can come down.

The finished extension: vaulted ceiling, roof light, french doors to the garden

And this is the room at the end of it

The same extension, plastered, painted and floored. The roof light you saw being cut in above is the one lighting the room. The same men who put the frame up finished it.

Garage conversions run the same way: opening built up, floor and walls insulated and framed, then plastered and finished as a room.

A bigger one, before and after

The back of the house before, and after: a rear extension with sliding doors, and a dormer on the roof.

The back of the house before the extension
The finished rear extension with sliding doors and a dormer above
Before After Tap to see it finished

One team, the whole job

You are not chasing four trades. The building work, the joinery, the plastering and the finishing are all ours, and we bring in what we need for the rest.

  • House extensions
  • Loft conversions
  • General building work
  • Plastering & finishing
  • Joinery & carpentry
  • Plumbing & electrical work

Based in Stepps, Glasgow. We work across the Central Belt — Glasgow, Falkirk, Coatbridge, Airdrie and the towns between.

Get a price for your job

Send a message with what you are planning, or ring and we will talk it through. If it is a bigger job we will come out and look at it before we price it.

info@gjhjoineryservices.co.uk