Aamtron Group General Contracting W.L.L. supplies and installs SR and SF waterproofing systems for basements in Qatar. Below-ground protection needs to be planned around the structure, exposure and available access. An internal damp patch can have several causes, while new construction gives an opportunity to coordinate waterproofing before walls are backfilled or concealed. A coating chosen without understanding those conditions may leave the original route of water entry unresolved. This guide explains the scope to establish, the details to coordinate and the information needed for a basement or foundation waterproofing enquiry.
Define the structure and the observed problem
Describe whether the building has a basement room, parking level, service pit, retaining wall or foundation requiring protection. Record where moisture appears and whether it changes after rainfall, cleaning, equipment operation or plumbing use. A stain at the base of a wall does not identify its source on its own. Note the construction and any existing drainage or waterproofing documents. Photographs should include the wider room as well as the affected detail. If the area contains electrical services or unsafe access, arrange the necessary protection before inspection. The objective is to distinguish water entry through the building envelope from internal leaks, condensation and other moisture sources.
New construction allows important coordination
Before a below-ground structure is covered, review how the waterproofing connects across slabs, walls, corners and construction stages. Identify joints, penetrations, starter bars and the interfaces with drainage or other trades. Agree the accessible inspection points before reinforcement, concrete placement, protection layers or backfilling restrict visibility. A written system detail is more useful than asking an installer to resolve every interruption during application. Confirm who is responsible for each stage and what happens when a following trade damages the completed work. Records taken before covering can be essential when the finished building gives little access to the exterior face of the structure.
Choose the protection side with the actual exposure in mind
Positive-side waterproofing is placed on the face exposed to water; an internal treatment may act from the opposite side. The available side depends on the construction and access, not merely the preferred coating. An internal remedy may not protect every concealed part of the building or resolve the original exterior defect. Obtain a suitable design where groundwater pressure, structural movement or difficult interfaces are involved. Do not assume all cementitious or liquid products suit the same pressure direction. The specification must establish the intended use and limitations of the particular product and detail, together with how the waterproofing relates to the surrounding construction.
Treat cracks and joints as distinct details
A construction joint, a movement joint and a visible crack are not interchangeable. Their purpose, condition and possible movement influence the repair approach. A coating across a moving gap may split even if it bonds well to adjacent concrete. Review drawings where available and request appropriate professional input for structural defects. Pipe entries, tie holes, corners and slab-to-wall junctions also require compatible treatment. Aamtron’s confirmed scope is waterproofing supply and installation; specialist structural repairs or injection capabilities should be agreed separately rather than assumed. Ask for the proposed details to be recorded in the scope before the broad waterproofing layer hides them.
Inspect the concrete and previous finishes
Surface preparation starts with identifying what the membrane will actually bond to. Dust, laitance, contamination, loose render and unsound repair patches can undermine adhesion. Existing finishes may conceal cracking or moisture, so a survey needs to distinguish retained layers from those requiring removal. Specify the preparation and repair method rather than relying on the phrase surface ready. The product documents determine moisture limits and other application requirements. Where concrete is damaged, resolve the appropriate repair assessment first. Waterproofing cannot restore structural capacity simply by covering a defect. Keep a record of the prepared substrate and completed repairs for inspection before application begins.
Coordinate drainage without confusing its function
Drainage and waterproofing are related but distinct. A functioning drainage arrangement may reduce exposure, while the waterproofing provides an agreed barrier within its design limits. Neither should be assumed to replace the other. Check the location and condition of outlets, channels, drainage layers and any sump equipment through the responsible specialist. If a drain is blocked or a pump is not operating, coating an internal wall alone may leave the wider issue unresolved. Ask which drainage works are included in the quotation and which belong to another contractor. For a new build, protect the waterproofing against damage while drainage and backfill are installed.
Manage occupied-basement work carefully
A basement in use may contain stored items, vehicles, services, finishes and operational equipment. Establish access, ventilation, isolation requirements and the permitted working area before planning repairs. Materials and preparation processes should be considered alongside the actual site conditions and safety arrangements. Do not enter restricted pits or carry out excavation without the necessary competent supervision. A programme should explain which areas are unavailable and how the work affects neighbouring rooms or building services. Allow for substrate repairs, curing, inspection and reinstatement rather than treating membrane application as the only activity. Clear boundaries help a facility manager plan the shutdown and coordinate the other trades.
Protect the completed waterproofing before covering
A below-ground membrane may be damaged by subsequent work even after a satisfactory inspection. Protection boards, screed or other layers should follow the agreed specification and be installed without puncturing or displacing the waterproofing. Check the sequencing of fixings, service brackets and backfill. Make the following contractor aware of the vulnerable areas and the repair procedure if damage occurs. Photograph corners, joints and penetrations before access is lost. Inspection records should identify the exact area checked and the products used. A signed inspection is valuable evidence of that stage, but it does not guarantee that later work has left the assembly undamaged.
Agree a meaningful inspection and test method
The test appropriate to a roof or tank may not apply to a retaining wall or buried foundation. Establish the acceptance method with the project specification, product instructions and responsible consultant where relevant. Inspect coverage, details and protection at accessible stages. If a controlled water test is appropriate, identify the limits, safety considerations and interpretation of results before conducting it. Do not promise a universal test duration or a single check that proves every inaccessible detail. For remedial work, agree how observations will be compared before and after treatment and what further investigation will occur if moisture returns outside the repaired scope.
Prepare enough information for a useful quotation
Share the building location, drawings if available, type and dimensions of the affected structure, photographs and repair history. Explain whether exterior access, excavation or internal removal is possible. Identify suspected sources of water and any drainage or structural assessment already completed. Ask the quotation to distinguish preparation, repairs, detailing, waterproofing, protection, testing and reinstatement. Record exclusions and responsibilities for other trades. A square-metre rate alone cannot describe the cost of difficult joints, limited access or substantial removal. Warranty terms must be specific and written; no unconfirmed duration, certification or lifetime protection claim is published on this page.
Maintain the building around the repaired area
Keep the waterproofing records accessible to the facility team and avoid later drilling or alterations that bypass the specified protection. Drainage and equipment maintenance should follow the responsible specialist’s requirements. When dampness reappears, record the location, timing and associated changes rather than assuming the original treatment has failed everywhere. A new penetration or plumbing fault may require a different response. Check accessible joints and finishes as part of planned building maintenance, with inspection intervals agreed for the property rather than a universal schedule. Early documentation makes it easier to investigate a local issue before finishes conceal the water path or repeated patching obscures the evidence.
Discuss the relevant system and scope
For suitable concrete applications, review the cementitious waterproofing product page and compare the materials catalogue. Product suitability depends on the current technical documents and the project conditions. Our service hub explains related roof, wet-area, pool and tank work, while the quotation guide helps compare responsibilities. Send your basement enquiry through the contact page. The next step is to establish an inspectable, written scope rather than prescribe one product to every below-ground defect.
Questions before you start
Does internal waterproofing replace an exterior system?
Not automatically. The exposure, pressure direction, structure and accessible side determine the appropriate scope.
Can a coating repair a structural crack?
A coating alone is not a structural repair. The defect needs assessment and a suitable repair detail before waterproofing.
What should a basement quotation include?
Preparation, repairs, joints, exact system, protection, inspections, access and reinstatement responsibilities should be identified.