What we do
| Service | What it covers |
|---|---|
| Brickwork | New and matched brickwork for extensions, repairs and rebuilds |
| Repointing | Replacing worn mortar to protect walls from damp and frost |
| Structural openings | Knock-throughs and openings with engineer-designed steel beams |
| Garden & retaining walls | Boundary walls, retaining walls and planters, properly founded |
| Period brick restoration | Sympathetic repair and lime mortar on older properties |
| Blockwork | Structural blockwork for extensions and new builds |
Why matched brickwork matters
The fastest way to spot a cheap extension is the brickwork: the wrong brick, the wrong mortar colour, joints that don't line through. Getting it right means sourcing brick that matches the existing house — reclaimed where needed — and mixing mortar to the right colour and mix. On older London walls that often means lime mortar, which lets the wall breathe rather than trapping moisture the way modern cement can. It's a detail most people can't name but everyone notices.
Repointing: protect the wall before it fails
Mortar is sacrificial — it's meant to weather so the bricks don't. When the pointing crumbles, recedes or cracks, water gets into the wall, and in a London winter freeze-thaw does the rest: bricks spall, faces blow, and a cosmetic job becomes a structural one. Repointing at the right time is cheap insurance. We rake out the failed mortar and repoint to match, using lime on period walls where it belongs.
Structural openings & steel
Opening up the ground floor — removing the wall between kitchen and diner, or forming a wide opening for bifold doors — means carrying the load above on a steel beam. That's not a job to eyeball: the beam is sized by a structural engineer, sat on proper padstones, and the surrounding brickwork made good. We handle the engineer's design, the steel, and the finish, signed off under building regulations.
Why build with Delta
- Brick and mortar matched properly — extensions and repairs that look like they were always there.
- Structural work done right — engineer-designed steel, correct padstones, building-regs sign-off.
- Period-aware — lime mortar and sympathetic repair on older London walls.
- Guaranteed & insured — 1-year workmanship guarantee, £2M public liability.
Frequently asked questions
What is repointing and does my house need it?
Repointing replaces worn mortar between bricks. If it's crumbling or receding, repointing protects the wall from damp and frost damage before it becomes structural.
Can you match existing brick and mortar?
Yes — we source matching or reclaimed brick and mix mortar to match the colour and (on older walls) use lime where appropriate.
Do you form structural openings and install steel?
Yes — engineer-designed steel beams for knock-throughs, open-plan layouts and bifold openings, with proper padstones and making-good, signed off under building regs.
Do you build garden and retaining walls?
Yes — brick and block garden, boundary and retaining walls with proper foundations and drainage.
Are you insured and guaranteed?
Yes — 1-year workmanship guarantee and £2M public liability insurance.
Related
Get a fixed-price quote
Whether it's repointing, a garden wall, a structural opening or brickwork for an extension — send us the address and details and a director will reply within one working day.
Request a free quote