Building/Architectural Expansion Joints

Building/Architectural Expansion joints Manufacturers in India

Designs for the proper movement of building components are an integral part of architectural detailing. The movements in the different parts of the building are mainly due to the change in temperatures, imposed loads, settlements, etc. Building/Architectural Expansion Joints ensure that the spaces between components are covered and provide the best barrier for the exteriors.

Building/Architectural Expansion Joints can follow several complicated patterns consisting of various materials. Aluminium is an excellent material used for such joints as it is easy to form and can last for a very long time without extensive maintenance.

When detailing a Building/Architectural Expansion Joints for specific applications, it is important for the builders to consider the magnitude and direction of the movements. Sometimes the dimension and details presented in the section are based on the maximum amount of expansion expected in extreme scenarios. Most building expansion joints are optimized to accommodate movements in only one or two directions. For joints to move in all directions, they are designed separately depending on the requirements of the building and its movements. The designer needs to review the plans and details to select the appropriate joint needed to fit the requirements of the building.

One of the issues that need to be considered when designing a Building/Architectural Expansion Joints is the height of the curbs. The dimension depends largely on whether or not a joint strip is to be used for a specific location.

Features of Building/Architectural Expansion Joints

  • Having high load capacity
  • Water tightness in the joints and connections to prevent leaking
  • Sustainability for pedestrian traffic
  • Resistance from aggressive substances
  • Reduced vibration leading to reduced building damages
  • Should have an attractive design

Application of Building/Architectural Expansion Joints

Roof Expansion Joints

The top surface of the curbs is sloped away from the joint and sheds condensation and moisture on the roof. Double layer of EPDM (ethylene propylene diene monomer) used in the expansion space to ensure no leakage.

The following are the different types of roofing expansion solutions:

  • Building Expansion Joint at Roof
  • Building Expansion Joint at Parapet
  • Building Expansion Joint Intersection

Floor Expansion Joints

The building expansion joints for the floor are designed to isolate sections of the building by inevitably curing through the floors. Aluminum and aluminum alloys can be used for floor expansion joints in a building. Moreover, EPDM is used to prevent the flow of water which runs continuously from one end of the building to another.

Our parking joints are designed to bear the load of heavy vehicle movement, no leakage, and are anti-skid.

The following are the different types of floor expansion solutions:

  • Floor Expansion Joint at the internal floor to floor and floor to wall/corner.
  • Floor Expansion Joint at Parking, Ground floor.
  • Landspace/Podium Expansion Joint.

Wall Expansion Joints

Building expansion joints in the walls are typically handled with aluminum water stops. An extra layer of EPDM is provided at external locations for zero leakage. These water stops are designed to accommodate flexing movements. The water stops running from the footing to the top of the wall and is covered by coping or flashing.

DECG International is a pioneer in manufacturing and installing building expansion joints in the country and has done several prestigious projects with various contractors. We are known for the quality – both in the product as well as the installation. Our unique designs are unmatched in the industry and we use a double layer of EPDM for added safety against water seepage.

Reference Sources:


DECG InternationalBuilding/Architectural Expansion Joints