non-residential products

WeatherTight for balconies

Heat shielding / Vapor permeable / Waterproof

Covers three-plane junction at external and internal corners of balconies.
The integrated molding with elastomer (rubber) blend provides flexibility for easy bending.

Waterproofing Solutions for Balcony Outside and Inside Corners

10-year warranty / Material: PE (Polyethylene)
・Covers the critical three-plane junction at outside and inside corners of balcony parapet.
・Two options: Intergrated Type and Combination Type.
・Intergrated Type dramatically improves installation speed and precision, supporting seven different wall thicknesses.
・Combination Type accomodates wall thicknesses that cannot be handle by the Intergrated Type.

Two Installation Methods: Intergrated Type and Combination Type

For balconies, two installation options are available: an integrated type for easier installation and higher accuracy, and a combination type compatible with various wall thicknesses.

Intergrated Type


Single-step installation for reduced labor and improved precision.

Combination Type


Can be installed using a combination of “corner members” and “inside/outside corner members”, making it suitable for wall thicknesses that cannot be handle by the intergrated type.

Product Specifications (for Balconies)

Intergrated Type


Name Applicable Frame Width (A) Width (W) x Height (H) x Depth (D) Code Package Contents Single Piece Shipment
Corner 105 108mm 310 x 200 x 100mm WTBK105 20 pcs. 〇 Yes
Corner 120 123mm 325 x 200 x 100mm WTBK120
Corner 123 126mm 328 x 200 x 100mm WTBK123
Corner 129 132mm 335 x 200 x 100mm WTBK129
Corner 138 141mm 343 x 200 x 100mm WTBK138
Corner 144 147mm 349 x 200 x 100mm WTBK144
Corner 2×4 112mm 314 x 200 x 100mm WTBK24
Outside/Inside Corner 105 108mm 210 x 210 x 100mm WTBD105
Outside/Inside Corner 120 123mm 225 x 225 x 100mm WTBD120
Outside/Inside Corner 123 126mm 228 x 228 x 100mm WTBD123
Outside/Inside Corner 129 132mm 235 x 235 x 100mm WTBD129
Outside/Inside Corner 138 141mm 243 x 243 x 100mm WTBD138
Outside/Inside Corner 144 147mm 249 x 249 x 100mm WTBD144
Outside/Inside Corner 2×4 112mm 214 x 214 x 100mm WTBD24

Combination Type


Name Applicable Frame Width (A) Width (W) x Height (H) x Depth (D) Code Package Contents Single Piece Shipment
Corner N/A 20 x 200 x 100mm WTBK 40 pcs. 〇 Yes
Outside/Inside Corner N/A 200 x 200 x 100mm WTBD 20 pcs.

Intergrated Type
-Timestamps-

00:10~Wall Surface Installation
00:52~Corner Installation
01:00~Outside/Inside Corner Installation

Combination Type
-Timestamps-

00:15~Wall Surface Installation
00:36~Corner Installation

Handling Precautions

・Store indoors, avoiding high temperature and high humidity.
・The product may deform at high temperatures. Keep away from fire or hot objects.
・Keep stored indoors and out of direct sunlight prior to installation.
・Always follow the standard installation manuals.
・Do not force or over-bend the product. This may cause stress whitening (discoloration) or cracking.