Construction chemical analysis: waterproofing, adhesives and mortars
The binder system determines the starting question
A waterproofing coating, a sheet membrane and a cement-based tile adhesive are construction materials with different binder systems and application roles. Some materials rely on a polymer film, others on a cementitious matrix, and some combine mineral and polymer components. For a construction-material study, we separate the binder, filler and additive questions before interpreting a composition difference. A shared product description such as waterproofing does not establish a shared chemistry.
Waterproofing coatings and membranes
Waterproofing films may use polymer binders with mineral fillers and smaller ingredients that affect dispersion, film formation or application. Membranes may contain polymer layers, polymer-modified bituminous material, reinforcement or surface layers with distinct compositions. For example, a manufacturer comparing membranes should state whether the question concerns the waterproofing layer, reinforcement or surface treatment. An analysis of several layers together can obscure which layer contributes a particular ingredient.
Tile adhesives, grouts and repair mortars
Cement-based tile adhesives commonly contain a mineral binder and aggregate, with polymer powders, cellulose ethers or other additives used to adjust application behavior. Grouts and repair mortars can likewise combine mineral components with ingredients controlling water retention, workability, shrinkage or adhesion. A major filler can dominate the sample while a lower-level organic additive still has an important functional role. The presence of an ingredient does not establish its exact original dosage or the performance of the complete mix.
Dry powder and hardened material are different samples
A dry mortar powder represents the supplied mixture before water addition and hydration. A hardened mortar represents the material after hydration and possible polymer film formation, so some original ingredients have changed. State whether a comparison concerns incoming powder or a newly prepared hardened specimen, and describe any substrate attached to a film. For the information lost when a liquid becomes a film, see alternative sample forms.
What can be proposed for overseas review?
We can review eligible powder and solid construction products whose components are in the existing chemical inventory; individual products remain subject to declaration review. Water-based waterproofing coatings are reviewed case by case after declaration; a cured film can be proposed instead when the liquid is not suitable for shipping. Membranes and construction products not individually listed are reviewed case by case after declaration, and we do not receive used building materials or waste. Liquid products containing formaldehyde or other prohibited hazardous-list substances, and non-water-based liquids, are not received as supplied.
How to start
We review overseas industrial samples before acceptance. Use our industrial analysis page and sample-shipping guide to prepare your declaration. Our reports are research-grade analytical reports from a laboratory that is not accredited. They cannot be used for product registration or legal proceedings.
FAQ
Should tile adhesive be studied as powder or hardened material?
Powder addresses the supplied mixture, while hardened material addresses the hydrated and film-forming system; the better sample depends on which stage your question concerns.
Does a similar filler content prove equivalent waterproofing?
Similar filler content does not prove equivalent waterproofing because binder continuity, layer structure, cure and application also influence the result.
What should be stated for a multilayer membrane?
Identify the layer of interest and any reinforcement or surface layer, so a combined composition is not mistaken for the chemistry of the waterproofing layer alone.
Can I send the liquid waterproofing coating?
A water-based waterproofing coating can be declared for case-by-case review, or a cured film can be proposed instead; liquids containing prohibited hazardous-list substances and non-water-based liquids are not received as supplied.
Send a sample declaration and state the material and question you want us to review.