The phrase "a waterproof layer" is correct and usable in written English.
It can be used when describing a material or coating that prevents water from passing through, often in the context of clothing, outdoor gear, or construction materials.
Example: "The jacket features a waterproof layer that keeps you dry during heavy rain."
Alternatives: "a water-resistant layer" or "a moisture-proof layer."
Another thing you can do is add a waterproof layer under the shingles.
Brushing the pastry surface with raw egg will add to these reactions and also forms a waterproof layer, which is again useful in blind baking.
This paper studies the adhesive behavior of a waterproof layer used between a concrete-bridge deck and an asphalt concrete overlay.
Such can be provided by thin sheets that have (1) a waterproof layer usually with polytetrafluoroethylene (Teflon), (2) an active layer of a catalyst (e.g., platinum, gold, or a complex organometallic compound on a carbon base), and (3) a conducting layer to carry the current generated in or out of the electrode.
The floating and bioadhesive drug delivery system was composed of a hollow spherical shell, a waterproof layer (Stearic acid), a drug layer (Ofloxacin), a release retarding film (the novel blended coating materials) and a bioadhesive layer (Carbomer 934P) prepared by using a liquid multi-layering process.
The surface cells of the epidermis are modified into horny scales which create a waterproof layer.
In general, no critical negative effects were observed in the case of regular buildings having up to three storeys, providing that sliding on a waterproofing layer is prevented.
It is made of a waterproofing layer, a root barrier, a drainage system and growing medium for the plants.
Viewed from the perspective of the (CH2) n groups that are expected to associate strongly with waxes to form a waterproofing layer, a progressively increasing proportion of alkyl chain content is observed in potato wound periderm, then native periderm, and finally tomato fruit cutin.
We trade in board shorts and sun lotion for warm fleeces and a good waterproof layer.
The pavilion has been designed for the motorsport season 2015 and is based on bent aluminium profiles, designed to minimize the weight of the structures, and a double membranes skin realized through a PU coated Polyester fabric (waterproof layer) and a PVC coated polyester open mesh fabric (solar radiation control).
