Discover the huge value of our
material & design appraisal service

& how to avoid designing defects into your project


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We do this

Review specifications & repair methods.

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Which does this

Helping ensure compatibility and appropriateness

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Giving you this

A greatly reducing the risk of material and design failure

Avoiding Defects

HarperBD review specifications and designs to help minimise the risk of defects being designed into your project.

Quality Control

We find that inappropriate materials and building practices are one of the main causes of building defects.
We review specifications, designs and estimates with the aim of identifying inappropriate materials, unnecessary works and anything potentially detrimental towards your project.

We then provide a written report discussing any issues identified and provide recommendations that are more sympathetic and appropriate.

This work includes the appraisal of;

Timber preservative treatments; 

  • Is it actually needed?
  • Has the correct preservative been specified? 
  • Is it sufficiently targeted, does it comply with COSHH regulations? 
  • How long should I expect it to last?
  • Is there a better approach?

Timber repair specifications; 

  • Engineered glulam
  • Timber resin splices
  • Traditional timber repairs
  • What could be a better option?

Damp controls;

  • Are they appropriate?
  • Is the ‘system’ detrimental to the building?
  • Is there a better approach?

Plaster and render specifications;

  • Is the material compatible and appropriate for your building? 
  • Will it tolerate dampness and salts?
  • Is there a better approach?

The consequences of inappropriate building refurbishments frustratingly makes up a significant volume of our work

. . . so why not engage us at the start?   

We will be your sounding board, second opinion, your next level of quality control


    Explore more of our super solutions


    Further reasons to work with Harper Building Diagnostics

    We regularly present at industry events and professional CPD seminars

    We work with all clients, whatever the type and size of property

    We're proud to have many clients who consider us part of their team

    We are dedicated to producing positive outcomes for our clients

    Ready to get started?

    What past clients have to say,

    "Lee is extremely approachable, down to earth, optimistic and importantly, we all got a strong feeling that he was ‘on our side’. We would certainly hire him again a little further down the line when we need expert advice and an encouraging presence."

    Sarah, Mark & Ben, Devon