Call Now
Website
Call
Business Details
Specialist Damp Proofing & Property Preservation Services
Wallseal Preservation has been a trusted provider of specialist damp proofing and property preservation services across Sunderland, Newcastle, and County Durham for many years. Our expertise spans rising damp solutions, penetrating damp treatments, basement waterproofing, and comprehensive timber preservation, including dry rot, wet rot, and woodworm eradication. We are an approved property preservation contractor, adhering strictly to British Standard 6576 and Property Care Association codes of practice. Our commitment to quality is reinforced by underwritten guarantees for select services through Westminster Guarantee Protection Trustees Ltd, alongside full public liability insurance.

As proud members of Checked and Vetted, we prioritise transparency, offering free surveys and tailored maintenance plans to ensure long-term property health. Our team combines technical proficiency with a customer-centric approach, providing expert advice and verified solutions to safeguard residential and commercial properties.
Services
Damp Proofing Penetrating Damp Treatment Basement Waterproofing Condensation Control Mould Control Dry Rot Eradication Wet Rot Eradication Woodworm Eradication Wall Tie Replacement Crack Stitching
Highlights and features
  • Local experts with years of experience in Sunderland, Newcastle & Durham
  • Underwritten guarantees for customer peace of mind
  • Fully insured public liability coverage
  • Proud members of Checked and Vetted
  • Free surveys and tailored maintenance plans
Associations and certifications
  • Checked and Vetted
  • Westminster Guarantee Protection Trustees Ltd
  • British Standard 6576
What people say
Excellent customer service Quality workmanship Reliable solutions Professional advice Peace of mind
Services
Damp Proofing
Our damp proofing solutions address rising damp through advanced chemical injection and physical damp-proof course installations. We use industry-approved methods compliant with British Standard 6576 to prevent moisture ingress. Customers benefit from long-term structural protection and underwritten guarantees for added assurance.
Dry Rot Eradication
Specialist dry rot eradication involves identifying and eliminating fungal growth through targeted chemical treatments and structural repairs. We replace compromised timber with treated alternatives to prevent recurrence. Compliance with Property Care Association standards ensures thorough, lasting results for residential and commercial properties.
Wall Tie Replacement
Wall tie replacement restores structural integrity to cavity walls affected by corrosion or failure. Our process includes installing stainless steel ties and resin bonding for durability. This service meets British building regulations, offering enhanced stability and compliance for domestic and commercial buildings.
Basement Waterproofing
Basement waterproofing combines tanking membranes and cementitious coatings to create watertight environments. We assess subterranean structures for hydrostatic pressure risks and apply tailored solutions. Customers receive fully guaranteed systems compliant with British Standard 8102 for below-ground waterproofing.
Condensation Control
Condensation control strategies include ventilation improvements and thermal insulation upgrades to prevent surface mould growth. We conduct moisture audits to identify causes and implement sustainable solutions. This service reduces health risks and property damage while maintaining indoor air quality standards.
Questions
What areas do you serve?
We operate throughout Sunderland, Newcastle, and County Durham, providing localised property preservation services with rapid response times.
Do you offer guarantees for your work?
All work carries our full guarantee, with selected services qualifying for underwritten protection through Westminster Guarantee Protection Trustees Ltd.
How can I arrange a survey?
Contact us via phone or email to schedule a free, no-obligation survey with one of our expert technicians at your convenience.
Are your services insured?
Yes, we maintain comprehensive public liability insurance to protect both our team and your property during all works.
What accreditations do you hold?
We are members of Checked and Vetted and comply with British Standard 6576 and Property Care Association standards.