Bostik H725 hybrid adhesive designed for facade cladding and expansion joints

Bostik H725 SEAL’N’FLEX FACADE is a professional-grade sealant for construction joints and expansion joints. Advantages include:

  • Cures without leaving air bubbles.
  • Easy to work with.
  • Low modulus.
  • Contains no isocyanates and solvents.
  • Permanent elasticity.
  • Resistant to moisture and adverse weather conditions.
  • Excellent adhesion without primer on most surfaces, including wet ones.


Bostik H725 SEAL’N’FLEX FAÇADE is specially developed as a versatile sealant for filling and sealing joints and expansion joints in pedestrian walkways on most common building materials such as concrete, bricks, paint, wood, enamel, aluminum, stainless steel, and various plastics.

Usage Instructions

A properly sized joint can absorb movements between building materials. The depth of the joint should always be proportional to its width. The depth of the joint should always be in proportion to the width of the joint up to 10 mm with a ratio of 1:1, with a minimum width and depth of 5 mm. For joints wider than 10 mm, the depth equals the width divided by 3 plus 6 mm.


Not suitable for PE, PP, PC, PMMA, PTFE, soft plastics, neoprene, and bitumen substrates.
Not suitable for structural glazing and large mirrors.
Not suitable for use in combination with chlorides (e.g., swimming pools).

Surface Preparation and Finishing

Application temperature: +5°C to +40°C (applies to environment and surface). All surfaces must be firm, clean, dry, free of grease, and dust. Bostik H725 SEAL’N’FLEX FAÇADE adheres perfectly without the need for primer on most non-porous surfaces. Porous substrates should be pre-treated with primer. Always check adhesion before application.


Bostik H725 SEAL’N’FLEX FAÇADE can be painted with water-based paint and most 2-component paints. Synthetic paints may dry slower. We recommend checking compatibility with paint before application. If Bostik H725 is already painted, we recommend lightly sanding the sealant and adjacent surfaces before using Scotch-Brite. For best results, apply the product after a few days.

Surface Cleaning

Materials and tools can be cleaned using specialized cleaning machines. Hardened materials can only be removed mechanically. Manual cleaning with soap and cloth is also possible.

Color Options

  • White.
  • Light beige.
  • Concrete gray.
  • Black.


  • Emicode EC1 Plus
  • ASTM C-920
  • SNJF F25E
  • A+ French VOC Regulation


Store in a dry place at temperatures ranging from +5°C to +25°C. Shelf life is 15 months from the date of manufacture.


Bostik H725 SEAL’N’FLEX FAÇADE Phân Phối Chính Hãng
100% modulus ISO 8339 ≤0,40 N/mm2

Application rate

120 g/min

Application temperature

+5°C to + 40°C



Curing time

@ +23°C/50% RH

2-3 mm/24 hours

Joint movement



ISO 1183-1 1,34 g/ml

Elongation at break

ISO 8339 600%


ISO 7390 < 3 mm

Frost resistance during transportation

Up to -15°C

Shore A hardness

DIN 53505 25

Skin formation

DBTM 10.00

90 min. @ +23°C/50% RH

Tensile strenght

DIN 53504 1,30 N/mm2

Temperature resistance

-30°C to + 70°C

These values are typical properties and may vary +/-3%

Đánh giá bài viết