In recent months, we have received a variety of questions about waterproofing and renovation. Whether these queries came from construction groups, forums, or private messages, we provided answers that often turned into technical consultations. We have compiled your questions along with brief answers. Feel free to contact us for additional queries at +48 796 343 313<\/strong> or a.kaczmarczyk@sanier.pl<\/a><\/strong>.<\/p>\n We have also prepared a series of waterproofing and renovation training sessions that we conduct year-round. You can find a list of upcoming sessions in the Courses and Training<\/strong> section.<\/p>\n Roofing felt should not be bent sharply. Corners need to be rounded or beveled (45-degree angles). Waterproofing should be done either entirely with roofing felt, KMB (thick-layer bituminous coatings), or other waterproofing materials \u2014 never partially with felt and partially with KMB (for corners).<\/p>\n When using KMB, corners also need to be beveled or rounded. Otherwise, fiberglass mesh must be embedded in the KMB at right angles to ensure proper sealing.<\/p>\n Yes. Clay is a cohesive soil that does not allow water to pass through. As a result, rainwater will accumulate near the walls and seep into the structure. Therefore, installing waterproofing in this case is essential.<\/p>\n <\/p>\n Dysperbit is a moisture-proof product, meaning it protects against moisture infiltration from wet soil. However, a moisture-proof material does not provide protection against flowing water or water exerting pressure on the wall. It has low UV resistance, limited flexibility, and may crack during drying if applied in thicker layers.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n Yes, but the substrate and ambient temperature must be at least +5\u00b0C. The substrate must not be frozen.<\/p>\n Coating waterproofing<\/a> should not be exposed to rain during curing.<\/p>\n Frozen substrates must be warmed up: use a tent and heaters to heat the area for several hours before applying waterproofing (a minimum of 2-3 days).<\/p>\n <\/p>\n Membranes<\/a> can be stored outdoors; however, adhesives or primers for membranes must be stored in heated indoor spaces with a minimum temperature of +5\u00b0C.<\/p>\n Water-based or two-component waterproofing<\/a> materials require storage in rooms where the minimum temperature is +5\u00b0C.<\/p>\n Single-component mineral waterproofing<\/a> materials (powder form) can be stored outdoors but must be protected against mechanical damage and moisture.<\/p>\n <\/p>\n They are not inferior and can also be used for waterproof insulation. Bituminous compounds with polyester beads<\/a> are lighter than pure bituminous compounds<\/a>.<\/p>\n They are used in waterproofing applications where the insulated surfaces cannot be subjected to excessive loads.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n Construction foil is neither waterproof nor moisture-proof insulation.<\/p>\n For horizontal barriers, it is best to use mineral<\/a> or hybrid<\/a> waterproofing systems that create seamless coatings.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n It is recommended to wait 2-3 days to allow the mortar to set before applying waterproofing.<\/p>\n <\/p>\n A liquid waterproofing membrane<\/a> is sufficient as a coating-based waterproofing solution. However, sealing tapes should be embedded at the junctions of the floor-wall and wall-wall connections to accommodate stress transfer within the waterproofing layer. It is also recommended to use filler-free bathroom-grade silicones or gel-based polyurethane sealants for enhanced protection.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n It does not have a negative impact.<\/p>\n <\/p>\n Dimpled membrane is not a waterproofing layer<\/a>. It serves a protective role as a slip layer and helps drain moisture that condenses on foundation insulation. Proper installation of the membrane is crucial, including the use of mounting strips.<\/p>\n Pipe penetrations are critical points and require additional sealing.<\/p>\n <\/p>\n The substrate must be even. An even substrate minimizes the use of waterproofing material and ensures the proper performance of the waterproofing layer.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n EPDM<\/a> is one of the best waterproofing materials available.<\/p>\n <\/p>\n Rounded fillets are essential, with the exception of EPDM<\/a> waterproofing.<\/p>\n <\/p>\n In reality, flat roofs are not completely flat. The roof slope should be no less than 3\u00b0, typically ranging up to 11\u00b0. Slopes can be directed either outward or inward toward the building.<\/p>\n <\/p>\nFrom the article \"Waterproofing and Renovation \u2013 Frequently Asked Questions\":<\/h3>\n
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Can Roofing Felt Be Bent at a 90-Degree Angle When Insulating Foundation Corners?<\/h3>\n
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Do Monolithic Building Foundations Adjacent to Clay Soil Need to Be Waterproofed?<\/h3>\n
Is Dysperbit the Same as Thick-Layer Bituminous Masses (KMB)?<\/h3>\n
Can Waterproofing Be Done Year-Round?<\/h3>\n
Can Bituminous Waterproofing Materials Be Stored Outdoors During Winter for Spring Use?<\/h3>\n
Are Bituminous Compounds with Polyester Beads Inferior to Pure Bituminous Compounds?<\/h3>\n
Can Construction Foil Serve as Waterproof Insulation Between the Foundation and Wall Construction Material?<\/h3>\n
Can External and Internal Waterproofing Be Applied Immediately After Constructing Foundation Walls?<\/h3>\n
Is Liquid Waterproofing Membrane Enough for Bathroom Waterproofing? Should You Invest in Additional Materials?<\/h3>\n
Does Underfloor Heating Negatively Affect the Structural Layers in Bathroom Waterproofing?<\/h3>\n
Is Dimpled Membrane a Waterproofing Layer?<\/h3>\n
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Do Pipe Penetrations Require Additional Sealing?<\/h3>\n
Does a Wall Always Need to Be Plastered for Vertical Insulation to Be Effective?<\/h3>\n
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Is Bitumen Felt Better Than EPDM Because It's Cheaper?<\/h3>\n
Are Rounded Fillets at the Junctions Between the Footing and the Wall Necessary?<\/h3>\n
Is a Flat Roof Truly Flat?<\/h3>\n
Welding EPDM Resitrix SKW Membrane: What If There's Sloped Styrofoam Below?<\/h3>\n