Roofing underlay screen
AssigneeLoda S.A.R.L.
InventorPatrick Grall
Life of this patent
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Abstract
The invention concerns an under-roof screen (100) comprising: a first layer (102) produced from a first metallic or metallized material forming a thermal reflection barrier; a second layer (108) produced from a second woven material bonded to the first layer (102); a third layer (106) produced from a third insulating material and bonded to the second layer (108); and a fourth layer (104) produced from a fourth metallic or metallized material forming a thermal reflection barrier and bonded to the third layer (106); the first layer (102) and the second layer (108) being provided with micro-perforations (110) providing permeability to water vapor and impermeability to water and the fourth layer (104) being provided with perforations (112) providing permeability to water vapor.
Claims13
Under-roof screen (100) comprising:
- a first layer (102) produced from a first metallic or metallised material forming a thermal reflection barrier;
- a second layer (108) produced from a woven material and bonded to the first layer (102);
- a third layer (106) produced from an insulating material and bonded to the second layer (108);
- and
- a fourth layer (104) produced from a second metallic or metallised material forming a thermal reflection barrier and bonded to the third layer (106),
- wherein the first layer (102) and the second layer (108) are provided with micro-perforations (110) providing permeability to water vapour and impermeability to water and the micro-perforations (110) are aligned through the first and second layers (102, 108), and wherein the fourth layer (104) is provided with perforations (112) providing permeability to water vapour and the micro-perforations (110) are smaller in size than the perforations (112).
Dependencies are inferred from the claim text.