Damp Proof Membranes (DPM)

Transcription

1 STAUF Klebstoffwerk GmbH, Wilnsdorf Primers & Excellence from the ground up! For more than 180 years. Damp Proof Membranes (DPM) Santiago de Chile/Wilnsdorf via Skype,

2 Product Overview 2

3 Suitable Sub Floors & Primers WFR-360 SMP-950 SPU-560 PUK-446 Consumption (STAUF notched trowel no. 3) 850 g/m² 900 g/m² 1100 g/m² 1000 g/m² Suitable sub floors Sanded mastic asphalt screed X X *) X Concrete B25 (non-skid surface) X X X Calcium sulphate (flow) floors X X X X Wooden planks, solid wood fibre boards X X X STAUF levelling compounds for wood flooring X X X X Chipboards V100 (E1), OSB boards X X X X Cement floors X X X X Suitable primers VDP-130 X X X X VLM-100 X VPU-155 X X X VEP-190 **) X X X *) = possible after priming with STAUF VEP-190 / **) = only when sanded with DRY sand 3 3

4 STAUF VDP-130 Primer (water based): Suitable for all STAUF adhesives Fast drying Easy to apply Creates an uniformly absorbent surface Dust binding Low consumption Good penetration 4

5 STAUF VPU-155 Primer/Damp proof membrane (1c-PUR): Primer for STAUF PUK, SMP, SPU-adhesives Damp proof membrane up to 4 CM% (2 layers) on cement floors Solvent-free Reduces tensions Improves stability on weak sub floors Creates a dust free surface Has to be sanded with DRY sand before applying levelling compound 5

6 STAUF VEP-190 Primer/Damp proof membrane (2c-Epoxy resin): Excellent adhesion Very good penetration Damp proof membrane up to 6% (2 layers) Primer for STAUF PUK, SMP, SPU-adhesives Easy to apply Suitable on mastic asphalt 6

7 Overview Primers/Damp proof membranes VDP-130 VPU-155 VEP-190 SMP-950 *) 1st layer 150 g/m² 150 g/m² 400 g/m² 1900 g/m² 2nd layer g/m² 350 g/m² - Damp proof membrane - 4 CM% 5 CM% 4 CM% Residual moisture in rel.humidity - 90% 95% 90% Drying time (absorbent subfloors) < 30 min. 1 hr./4 hrs. ~ 24 hrs. Suitable subfloors Sanded Mastic asphalt screed X X X X Mastic asphalt screed without sanding X Concrete B25 (non-skid surface) X X X X Calcium sulphate (flow) screeds X X X X Wooden planks, solid wood fibre boards X X X X Unlaminated gypsum fibre boards X X X X Chipboards V100 (E1), OSB boards X X X X Stone, ceramic terazzo, tiles X Cement floors X X X X Cement floors with residual moisture X X X Bonded screed ZE30 X o *) with STAUF notched trowel no. 12; glue application with DPM & bonding in one step 7 7

8 STAUF Levelling compounds Ibola FZ / Ibola OS (cementious): Self levelling Pumpable Good sandable To level hight differences Creates a plain & smooth surface Up to 60 mm (FZ)/ 5 mm (OS) Drying times depend on layer thickess and climatic conditions (humidity, temperature). 8

9 Sub Floor Humidity What happens during the drying of screeds? Is there water (liquid) or water vapour (gaseous) present? CM% % by weight % rel. humidity Remark > 4 > Liquid water is present in the pores of the screed *) 2 4 3, Water vapour & partially liquid water is present in the pores (balanced) **) < 2 < 3,5 < 70 Screed is ready to receive parquet etc. without DPM *) A damp proof membrane has to be water-proof and has to have a resistance against water vapour diffusion. **) A damp proof membrane must have a certain water vapur permability to function as DPM to reduce the and control the water vapur diffusion from the subfloor. 9

10 Definition of DPMs A vapor barrier is a layer that is installed on the warm side of a construction (usually the inside) and prevents the water vapor diffusion. It is to prevent an unacceptably high level of penetration of the insulating layer by diffusing water vapor. It can simultaneously assume the duties of an air sealing layer. The moisture protection values of individual materials are defined in DIN The water vapor diffusion resistance factor µ is the thickness of the considered building material (in meters) times the so-called s d -value (water-vapor diffusion equivalent air layer thickness) of the considered component layer. This indicates the diffusion-openness or tightness of a device layer. DIN defines -Component layers with an s d -value of 0.5 m as permeable layer, -Component layers with an s d -value of greater than 0.5 m and less than 1500 m as a diffusion inhibiting layer (vapor barrier), -Component layers with an s d -value of 1500 m as a diffusion-proof layer (vapor barrier). Usually DPMs are often called moisture barriers but this technically not correct. Real barriers are only metal (aluminum or copper foil) and glass.. 10

11 Properties of DPMs To be effective as a DPM the corresponding primer has to have as resistace to water vapor diffusion Water vapor diffusion resistance factor (µ-value) Material parameter, without unit The µ-value is the diffusion resistance of a material in relation to an equal thickness of air. To determine the vapor barrier effect a DPM s d -value is used. It is calculated from the µ-value and thickness of the material. It indicates how thick a layer of air (in meters) has to be in order to have the same water vapor diffusion resistance as the corresponding material with thickness d. s d = µ * d The µ-value is a material parameter. In practice, the applied layer thickness is therefore crucial s d -value. 11

12 Properties of DPMs µ-value < 50 open > 50 permeable from from inhibiting diffusion-proof s d -Value < 0,5 m permeable 0, m inhibiting DPM accord. to DIN, e.g. PE foil > 1500 m diffusion-proof Barrier accord. nach DIN, e.g. Aluminium foil) 12

13 Properties of DPMs Why use DPMs? Shortend construction times require solutions to lay parquet although the subfloor is not ready for installation. Functions: Adhesion promoting Sub floor preparation for levelling and bonding Reduced & controlled water vapour transmission from the sub floor Protection of flooring construction against humidity from the sub floor Improvement (hardness) of screed surface (2c Epoxy resin, 1c PUR) 13

14 Types of DPMs 2c Epoxy resin (STAUF VEP-190) 1c Polyurethane (STAUF VPU-155) Polymer-based dispersions (STAUF VDP-160) Silane-based (STAUF VSP-110) Only for sub floors that are NOT sensible against moisture! (cement screed, concrete) Not suitable against continously uprising moisture! Continously uprising moisture may NOT be capsuled as this would cause damage to the sub floor that might destroy the whole flooring construction! 14

15 Construction Of A Moisture Barrier The screed has to be cleaned and free of dirt, dust, etc. VEP component Epoxy resin 15

16 Construction Of A Moisture Barrier Fill hardener completely into lower part of drum. Thorough mixing of the two components with an electrical stirrer. 16

17 Construction Of A Moisture Barrier Distribute VEP-190 smoothly and carefully with a roller (approx. 300 g/m²) 17

18 Construction Of A Moisture Barrier After drying of at least 12 hrs. apply 2. Layer of VEP-190 Afterwards sanding with approx. 3 kg/m² of quartz sand If glueing is done within hrs. with STAUF SMP, SPU or PUK adhesives, there is no use of quartz sand necessary. 18