Book full repairs.

Whether you are dealing with a sagging floor, a compromised partition wall, or extensive plaster failure, a professional builder will coordinate multiple trades to bring the space back to a "good as new" condition. This guide outlines what to expect regarding costs, timelines, and essential regulations.

What Does the Work Involve?

• Site Assessment: A thorough inspection to identify the root cause of damage, including moisture readings and structural integrity checks.
• Stabilisation: Making the area safe by propping up loads, isolating electrical circuits, or capping off plumbing.
• Strip-out: Careful removal of damaged materials, including blown plaster, rotted timber joists, or contaminated insulation.
• Structural Rectification: Replacing or reinforcing timber studs, floor joists, or lintels to meet current safety standards.
• Surface Preparation: Installing new plasterboard, floorboards, or screed to create a level, sound substrate.
• Finishing: Professional plastering (skimming), sanding, and woodwork installation (skirting/architraves) ready for decoration.
• Waste Management: Responsible disposal of all debris via skips or licensed waste carriers.

Typical Costs

Prices are primarily driven by the "hidden" elements of the job. While a surface may look simple to fix, the discovery of dry rot, asbestos, or outdated wiring behind a wall can significantly increase the final invoice.

How Long Does It Take?

• Minor localized repairs: 1–2 days (e.g., replacing a section of floorboard and re-skimming a small wall).
• Medium room restoration: 3–5 days (e.g., stripping a ceiling, replacing joist hangers, and full re-plastering).
• Major structural repairs: 1–3 weeks (e.g., multiple rooms, chimney breast removals, or extensive subsidence-related fixes).
• Drying times: Always allow an additional 3–5 days for fresh plaster to "pink up" before applying any paint.

DIY or Professional?

While minor filling and painting are suitable for DIY, "full repairs" usually involve structural or integrated service work that requires a professional. Structural alterations must comply with Building Regulations, and any work involving gas or mains electrics is legally restricted to Gas Safe and Part P registered engineers.

Attempting to repair structural timber or load-bearing walls without professional oversight can invalidate your home insurance and lead to dangerous collapses.

Choosing the Right Tradesperson

• Check Credentials: Look for membership in the Federation of Master Builders (FMB) or TrustMark.
• Insurance: Ensure they hold Public Liability Insurance (minimum £2 million) and Employer’s Liability if they use staff.
• Waste License: Confirm they are a registered upper-tier waste carrier to avoid fly-tipping fines being traced back to you.
• Questions to Ask:
  • "Do you provide a detailed written quote rather than an estimate?"
  • "How will you contain dust and protect the rest of my home?"
  • "Can you provide references for similar structural repair work?"
  • "What is your procedure if you discover asbestos or rot during the strip-out?"

UK Regulations

• Building Regulations (Part A): Applicable if you are altering the structural integrity of the building (e.g., replacing joists or lintels).
• Part L: If you replace more than 25% of a "thermal element" (like a wall or roof), you may be required to upgrade the insulation.
• CDM 2015: Homeowners are responsible for ensuring their project is managed safely, though this is usually managed by your lead contractor.
• Asbestos Regulations: Any property built before 2000 must be checked for asbestos before disturbing walls or ceilings.

Common Problems

• Matching Existing Finishes: It is difficult to match 100-year-old lime plaster with modern gypsum; ensure your builder understands heritage materials if applicable.
• Creeping Scope: Initial "small" repairs often reveal larger issues like rising damp or woodworm once the plaster is removed.
• Poor Drying Conditions: Rushing to paint over damp plaster leads to "flaking" and salt crystals (efflorescence) ruining the finish.
• Access Issues: Large items like 2.4m plasterboards or skips require clear access; narrow hallways or lack of parking can add labour hours.

Frequently Asked Questions