The Load Bearing CompanyStructural & steel works0161 706 3593Free survey
Lancashire

Knock-throughs & new openings in Blackburn

Planning a knock-through in Blackburn? We open up kitchens, dining rooms and through-lounges — engineered, signed off and left ready for plaster.

Blackburn and Darwen are dense stone and brick terraces with larger period homes in Wilpshire and Mellor — solid-wall knock-throughs, chimney work and repointing are the regular jobs.

A knock-through joins two rooms into one — most often the kitchen and dining room, or the front and back rooms of a terrace or semi. We also form new doorways and widen existing openings, including large openings in rear walls for bifold or sliding doors.

Recent knock-throughs work

Steel beam spanning a full-width rear opening of a semi-detached house into a new extension
Full-width rear opening — the whole back of the house carried on one steel
Long RSJ spanning a knock-through with the floor above supported on temporary props
Full-width knock-through — the house held on props while the steel goes in
Extension shell in blockwork with the knock-through steels installed overhead
The new room taking shape once the steels are in

What’s included

  • Kitchen-diner and through-lounge knock-throughs
  • New doorways and serving hatches
  • Widening existing openings
  • Rear wall openings for bifolds, sliders and French doors
  • Openings into new extensions
  • Blocking up old doorways and openings

Blackburn work is inspected by Blackburn with Darwen Borough Council building control, or a registered approver.

Knock-throughs & new openings in Blackburn: your questions answered

Do you cover Blackburn?

Yes — Blackburn and the surrounding area are part of our regular patch. Blackburn work is inspected by Blackburn with Darwen Borough Council building control, or a registered approver.

Do I need planning permission for a knock-through?

Usually not for internal walls in a house. You do need Building Regulations approval if the wall is load-bearing, and listed building consent if the property is listed.

Can you form an opening for bifold doors?

Yes. We install the steel lintel or goalpost frame the engineer specifies and leave the structural opening sized to your door supplier's dimensions.

Will a knock-through make a lot of dust?

Cutting masonry is dusty, so the work area is sheeted off, dust extraction is used on cutting tools and the site is cleaned at the end of each day.

More structural work in Blackburn

Wall Removal in Blackburn

Open up kitchens, dining rooms and living spaces safely, with the wall's load carried by a correctly designed steel beam.

Steel Beams in Blackburn

Supply and fit of steel beams, columns and goalpost frames for knock-throughs, extensions and loft conversions.

Structural Brickwork in Blackburn

Shop fronts, brick facade rebuilds, wall tie replacement, subsidence repairs and repointing — with bricks and mortar matched to the original.

Knock-Throughs nearby

We also cover knock-throughs in Burnley, knock-throughs in Preston, knock-throughs in Chorley. See the full knock-throughs & new openings service or all work in Blackburn.

Knock-Throughs in Blackburn?

Send photos or your engineer's drawings for a same-day budget price, or book a free survey in Blackburn.

Get a free surveyCall 0161 706 3593