Car Park Waterproofing
Underground and multi-storey car parks leak through deck joints, soffit cracks and ramp junctions under constant vehicle loading. Seal Smart seals the water path at the source with injectable barriers — preventing ingress from tracking into lower levels and critical plant.
Common water ingress problems
- Leakage through deck expansion joints and construction pour lines
- Soffit cracking allowing water to drip onto vehicles and lower floors
- Ramp joints and slab-to-wall interfaces under hydrostatic head
- Water tracking from upper structures into the car park below
Assess
We trace the leak path across decks, joints and soffits to confirm where water is entering before specifying the injection scope.
Treat
Seal Smart S&S Formula is injected into the affected joints and cracks from the accessible face, forming a deep seal that follows the water path to its source.
Verify
Post-injection inspection confirms the treated area is dry, with works sequenced to keep the car park operational wherever possible.
From persistent water ingress to completely dry and sealed
Water was getting in around the Cilla Black statue on Mathew Street and tracking down into the Cavern Walks shopping centre car park below. We traced the leak path, sealed it at the source and completed the work in two days — one day ahead of schedule.
Car park waterproofing FAQs
Questions about deck joints, soffits or keeping a live car park operational? Our engineering desk can help.
Can car park waterproofing be carried out while the car park is in use?
Where access allows, works are sequenced around live operations to minimise disruption. The injection is applied from the accessible face, which may reduce the need for full closures — subject to site assessment.
Do you treat from the upper or lower deck?
We treat the structure from the accessible face that reaches the water path. A site survey confirms which soffit, joint or crack carries the leak so the injection targets the source rather than the symptom.
What guarantees apply to car park works?
Guarantees are specific to the agreed engineering system, scope of works and treated area, detailed clearly in the formal quotation and contract. We do not offer misleading blanket guarantees.
Verified Quality & Performance Standards
Engineered injection records, site RAMS compliance, and contractor handover assurance.
Signed Handover Records
Every project is signed off through formal inspection protocols, joint-by-joint quality records and verified post-injection checks before site demobilisation.
Direct Technical References
Specific project case studies, client contacts and procurement referees can be provided directly to pre-qualification teams upon tender submission.
Verified Accreditations
RISQS approved, PTS/CSCS certified workforce, Constructionline Silver member, with documented compliance available for procurement review.
Request a Car Park Survey
Submit deck layout, joint details and leak history for technical review.
