What are the results of poor commercial roof design?

Skilled installation and quality inspections

Roof design is vital to any new roof. From hot melt roofing, to green roofs, or even blue roofs, the design of the roof itself is crucial. A poorly designed roof is likely to have a range of problems and issues that will result in the roof breaking down completely, and your property suffering from damp, and water damage. As professional experts here at Enviroply Roofing, we understand the key elements to every roof style. And as industry experts, we are always sure to provide a high quality roofing solution for any property. Quite often this means that we need to completely replace existing roofs that have not been designed thoroughly or carefully. So, what are the results of poor commercial roof design?


What are the results of poor commercial roof design?

Poor design leads to a roof that struggles with a number of issues, including:

  • Water ingress and damp
  • Blisters
  • Poor insulation

Water ingress and damp

A roof that is not sealed carefully, following the most recent guidelines and manufacturers instructions, is likely to allow water through at least the first, exposed layer of the roof. While this might not seem like much, over time water damage can result in a variety of problems ranging in extremity, from rotten roof decking, to damp internal walls. And this can be expensive to fix.  Water ingress can occur for a variety of reasons, including:

  • Splitting- roof membranes that are of low quality, or that are poorly installed can split over time. This is common around areas of flashing where the metal will move more than membrane during temperature changes. A single ply roofing membrane can prevent this, but it needs to be installed securely and appropriately, with this issue in mind.
  • Open laps- These occur when the installer has not followed the right installation procedure for a fully adhered roof. A roofing team that are not professional might rush your roof job and neglect to apply adhesive thoroughly across the whole of the membrane. In addition, they may also simply forget to adhere one layer, or even try and adhere the membrane to a dirty surface. This will interfere with the adhesive process, and result in loose patches around the roof. Drying times, and adhesive type can also influence the effectiveness of the roof.

Poor insulation

Not quite as bad as a leaking roof, poor roof design includes using inefficient, or incorrect insulation. This means that your building will not retain heat as efficiently as it should, and you could be spending more than necessary on your heating and electric bills as a direct result. For companies and businesses focused on cutting costs, the right insulation is an essential factor.


Blisters on a roof are small raised patches. They can be unsightly and unattractive to look at, ruining the ascetic of your roof terrace. These are caused from moisture in the roofing materials, which is then heated by the sun, turning to vapour, and searching for somewhere to escape. During installation this can occur when the roof membrane is applied to a damp or dirty surface, or if the insulation materials have been incorrectly stored, and allowed to become wet. While this isn’t due to poor design as such, it is a negligent error on behalf of your roof installers.

For more information or for professional, reliable roof design, get in touch with the team today, here at Enviroply Roofing.