Joinery for Extensions & New Builds in Lincolnshire
First and second fix carpentry for extensions and new builds – from floor joists, stud walls and roofs to doors, skirting and staircases.
- Domestic & commercial
- New build, renovation & restoration
- Based in Horncastle
- Rated 5.0★ on Google
First fix to final finish
GT Joinery has years of experience on new build sites and home extensions. Whether you’re a homeowner adding a single-storey extension or a builder who needs a reliable carpenter for first and second fix, Antonio can take on the joinery from start to finish.
Having one joiner carry the job from the structure through to the finishing details means fewer handovers, consistent standards and someone who understands how it all fits together.
First & second fix joinery
- First fix: floor joists, stud partitions and door linings
- Roof structures – trussed and cut roofs
- Second fix: internal doors, skirting and architrave
- Window boards and boxing in
- Staircase installation
- Working to builders’ and architects’ drawings
- Domestic extensions, garages and outbuildings
- Commercial joinery projects
Extension and new build projects
Recent work on extensions and new builds across Lincolnshire.




Carpenter for builders and homeowners in Lincolnshire
Based in Horncastle, GT Joinery works on extensions and new builds across Lincolnshire – including Woodhall Spa, Louth, Lincoln, Skegness, Spilsby, Alford, Coningsby, Tattershall, Market Rasen, Wragby and the villages in between.
Builders and developers are welcome to get in touch about upcoming projects.
Areas covered
Based in Horncastle and working across Lincolnshire, including:
Extension & new build FAQs
What is first fix and second fix?
First fix is the structural and “hidden” carpentry done before plastering – floor joists, stud walls, roof timbers and door linings. Second fix is the finishing joinery after plastering – doors, skirting, architrave, window boards and staircases.
Do you work as a subcontractor for builders?
Yes. GT Joinery takes on commercial and trade work as well as domestic jobs, and is happy to work alongside builders and other trades.
Can you take on just part of a project?
Of course – whether that’s just the roof, just the second fix, or the full joinery package.
Other joinery services

Staircases & Balustrades
Full staircase replacements, new balustrades, newel posts, spindles and handrails – fitted properly and finished neatly.

Roofing & Roof Trusses
Trussed rafter and cut roofs for extensions, new builds, garages and outbuildings, including vaulted ceilings.

Doors & Garage Doors
Internal doors hung and lined, external timber doors and traditional side-hung timber garage doors.

Kitchen Fitting
Units, worktops, end panels and plinths fitted accurately, so your new kitchen looks the way it should.

Skirting, Architrave & Flooring
Second fix finishing: skirting boards, architrave, window boards and flooring for a crisp, clean finish.

Shelving & Fitted Furniture
Made-to-measure alcove shelving, cupboards, desks and storage that makes the most of awkward spaces.

Renovation & Restoration
Joinery repairs and upgrades for older homes and refurbishments – repairing what can be saved, replacing what can’t.
Planning an extension or new build?
Call Antonio on 07787 767955 or send over a few details (and photos if you have them) and he’ll get back to you to talk it through.