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Damp and mould surveys are assessments conducted to identify and analyse moisture issues in buildings that can lead to the growth of mould. These surveys are essential for maintaining healthy indoor environments and the structural integrity of properties. Here’s a brief overview:

1. Purpose: 

• The primary goal is to detect the presence and extent of dampness and mould, determine their causes, and recommend appropriate remedial actions.

2. Inspection Process: 

• Visual Inspection - we examine areas prone to dampness, such as basements, bathrooms, kitchens, and attics. They look for visible signs of mould, water stains, peeling paint, and musty odours.
• Moisture Measurement - we use tools like moisture meters and hygrometers to measure moisture levels in walls, floors, and air to identify hidden dampness.
• Thermal Imaging - we employ infrared cameras to detect cold spots and moisture behind walls and ceilings that aren’t visible to the naked eye.

3. Common Causes: 

• Condensation - Often due to inadequate ventilation and insulation, leading to high humidity levels.
• Rising Damp - Caused by groundwater moving up through walls and floors due to lack of or failed damp-proof courses.
• Penetrating Damp - Resulting from external water entering the building through walls, roofs, or windows due to structural issues or defects.

4. Health Implications: 

• Prolonged exposure to mould can cause respiratory problems, allergies, and other health issues, especially in vulnerable individuals like children, the elderly, and those with pre-existing health conditions.

5. Remedial Actions:

• Ventilation Improvements - Enhancing airflow through the installation of vents, fans, and extraction systems.
• Insulation and Sealing - Adding or improving insulation to prevent condensation and sealing leaks or cracks in the building envelope.
• Repairs - Fixing structural issues such as broken roof tiles, faulty gutters, and cracked walls to prevent water ingress.

Conducting damp and mould surveys is a proactive approach to ensure a healthy living environment, protect the building's structure, and avoid costly repairs in the future.

Our Sprayed Foam Installation Reports use the nationally recognised PCA Protocol to assess the level of risk to a roof structure posed by a spray foam installation. 

What is Spray Foam Roof Insulation?

Spray foam roof insulation is designed to minimize heat loss from homes, as most warmth escapes through walls, windows, and roofs. By preventing heat from escaping, it enhances energy efficiency and can reduce heating costs. This insulation consists of a chemical mixture that, when combined, expands up to 30-60 times its original liquid volume, filling all gaps effectively.

The government promotes spray foam insulation as a VAT-free energy-efficient home improvement to encourage investment in energy-saving measures. Some households might qualify for free or low-cost installation through the Great British Insulation Scheme, set to run until March 2026. It was also included in the Green Homes Grant program, which closed in March 2021.

Although spray foam insulation has been available for 30 years, its popularity has surged recently due to these initiatives and the push for more energy-efficient homes. The Property Care Association estimates that up to 250,000 homes may have spray foam insulation in their attics.

Types of Spray Foam Roof Insulation

There are two main types of spray foam roof insulation, each with distinct characteristics:

1. Closed Cell Spray Foam: This type hardens into a solid and has been used to reinforce older, deteriorating roofs. However, it can create stress on roof supports, limit air circulation, and lead to condensation, which may cause timber rot.

2. Open Cell Spray Foam: This softer type is solely for insulation purposes and is used in new constructions, commercial buildings, and residential properties. It must be applied by a certified installer. A report from the Health & Safety Executive in April 2024 identified scenarios where using open cell spray foam directly on roof tiles might lead to high condensation risks and timber decay, while also outlining safer installation practices.

Issues with Spray Foam Insulation

Despite its benefits, spray foam insulation has several drawbacks:

- It can be costly and must be installed by professionals.

- It may disrupt winter condensation balance, putting untreated timber at risk of decay.

- Once applied, it is difficult and expensive to remove.

- Lenders are increasingly hesitant to finance properties with spray foam insulation, complicating sales as potential buyers face mortgage challenges.

- Equity release companies typically avoid lending on homes with this insulation.

Additionally, heightened media scrutiny has resulted in homeowners facing aggressive tactics from untrustworthy spray foam removal companies and legal firms pursuing mis-selling claims. Property professionals, including estate agents and surveyors, are also more likely to express concerns about properties with spray foam insulation, with some agents refusing to list such homes.