Joints and Sealants

Product Details:

Uses
Sealing movement joints in building and civil engineering structures, including superstructures, floors, basements and subways.

Advantages

• Meets key international standards
• Forms a tough, elastic, rubber-like seal
• Accommodates continuous and pronounced cyclic movement
• Excellent adhesion to most common substrates, including primed concrete, glass, aluminium and stainless steel
• High resistance to ageing reduces physical damage due to climatic extremes

Description
Thioflex 600 is available in gun and pouring grades. The gun grade is ideal for general application. It is packed in a ready to mix, 2.5-litre tin containing the base and curing agent in the correct proportions. The pouring grade for joints in horizontal surfaces is supplied in 5-litre packs with the base and curing agent in separate tins. Thioflex 600 is particularly recommended for use in high-rise buildings and other applications where access for subsequent maintenance will be difficult and the risk of early movement failure must be minimised. It is also suitable for sealing joints in brickwork, retaining walls, basements and subways. Thioflex 600 pouring grade is recommended for initial sealing of expansion joints and stress relief joints in floors and sealing other horizontal surfaces.

Design criteria
Thioflex 600 may be applied to joints between 5 and50 mm wide. Joints which are expected to experience cyclic movements should be designed to an optimum width : depth ratio of 2: 1, subject to the overriding recommended minimum sealant depths set out below:5 mm for metals, glass and other non-porous surfaces;10 mm for all porous surfaces;20 mm for trafficked joints and those subject to hydrostatic pressures. To ensure that the sealant remains within its stated movement capacity (25% MAF), sealing slot widths should be designed in accordance with the recommendations of BS 6093. The use of a surface primer is always required on porous surfaces. On non-porous surfaces, a primer is not normally required except where glass or glazed surfaces are to be permanently immersed in water.

Application instructions
Joint preparation
The joint surfaces must be thoroughly dry, clean and frost free. Remove all dust and laitance by rigorous wire brushing, grinding or grit blasting. Remove all rust, scale and protective lacquers from metal surfaces. Remove any oil or grease with Fosroc Equipment Cleaner.
Any expansion joint filler must be checked to ensure it is tightly packed and no gaps or voids exist at the base of the sealing slot before positioning a bond breaker. Note: The use of a bond breaker is not required in expansion joints containing Hydrocell XL or Expandafoam cellular polyethene expansion joint fillers. For construction or contraction joints a bond breaker tape or backup strip should be used. Where hydrostatic pressure exists, only bond breaking tapes must be used, not foamed back-up strips. Where a particularly neat finish is required, mask the face edges of the joint before priming and remove immediately after tooling is completed.

Priming
When Fosroc Primers 4 or 7 are required, these should be used as follows: Fosroc Primer 4: For use on glass and ceramics which are to be permanently immersed in water. It is one part chemically active clear liquid for brush or pad application. One thin coat should be applied and allowed to dry for 2 to 5 minutes prior to sealant application.
Fosroc Primer 7: It is one part chemically active clear liquid for brush application to concrete, stone, brickwork, timber and unglazed edges of ceramic tiles. One thin coat should be applied using a clean, dry brush, ensuring complete coverage. Avoid over priming resulting in an excess of primer in the base of the joint or application beyond faces.

Product Details:

Uses
For sealing joints in retaining walls, roofing (sealinghorizontal chases, flashings, gutterings and sheet laps),sealing terminations of bitumen based waterproofingmembranes

Advantages

• „Firm, flexible weather resistant seal
• „Excellent slump resistance„
• Suitable for permanent immersion in water„Compatible with asphalt or bituminous surfaces„
• Resistant to alkalis and sulphates
• „Easy to apply

Description
A flexible, gun applied sealant based on a combination ofbitumen and synthetic rubber. Dries to form a rubbery sealwith excellent slump resistance. Nitoseal MB175 has goodresistance to biodegradation, and is suitable for sealing lapjoints in gutters and drainage channels where ponded watermay reside. Also suitable for general sealing or pointing workin roofing and flashing applications.

Design Criteria
Joint configurationJoints should be of a size to permit adequate application ofNitoseal MB175. Very narrow joints are difficult to sealeffectively and for most applications 10 mm should beconsidered as minimum width. Maximum joint width shouldnot exceed 40 mm. A minimum seal depth of 15mm shouldbe maintained.
Movement accommodation factorJoints should be designed so that total cyclic movement in tension or compression does not exceed 10% of the joint width at time of sealing. Total movement in shear should not exceed 20% of joint width at time of sealing.

Application Instructions
Joint preparation
Ensure joint surfaces are completely dry, clean and frost free. Joint backing must also be dry. Remove all dirt, dust, laitance and loose material by vigorous wire brushing.Remove all rust, scale and loose surface coatings from metal surfaces. Remove any oil or grease with Solvent 10.Where a neat joint finish is required, cover the joint face edges with masking tape before Nitoseal MB175 application and remove the masking tape immediately after the sealing work has been completed.Priming porous surfacesNon-moving joints normally do not require use of primer, however excessively porous surfaces or friable surfaces may need priming. Consult Parchem for advice. Priming non-porous surfacesNot normally required. Where necessary, metal surfaces should be cleaned using Solvent 10. Ferrous metals should be treated with an anti-corrosion primer.

Application
Nitoseal MB175 may be applied by gun direct from the cartridge or by trowel. When loading sausage into gun ensure nozzle is cut to the required length and angle, and that the sausage membrane has been punctured.Hold gun firmly against joint at a constant angle of about 45°. Guide nozzle along the joint gradually, ensuring good contact with joint surface. Never pump the trigger hard. Wipe the nozzle occasionally to ensure a clean extrusion.After sealant has been applied, it should be tooled to a slightly concave surface with a wooden spatula, which may be moistened with White Spirits or similar solvent.
Clean upTo be removed from equipment immediately after use with a solvent such as Solvent 10 or White Spirits. Do not use solvents on hands, use suitable proprietary skin cleaner.Water immersionNitoseal MB175 is suitable for permanent immersion in water, however, it is essential to allow full solvent evaporation from sealant prior to water immersion. This will take about 14 days at 20°C, longer if temperatures are lower or the Nitoseal MB175 is deeper than 20 mm.MaintenanceMechanical damage may be repaired at any time - ensure that surface is clean, dry and free of foreign matter to allow good adhesion of new to old Nitoseal MB175.

Storage
12 months, stored in cool dry conditions in original, unopened containers when kept in dry conditions between 5°C and 27°C.

Product Details:

Colpor 200PF is a two component cold applied pouring grade joint sealant for pavement joints. It is flow applied into the joint either directly from the can or using a sealant gun.

Colpor 200PF retains its movement accommodation of 25% on butt joints throughout the extremes of temperature, it does not harden in cold weather nor become excessively soft, or pick up in hot conditions.

Colpor 200PF is resistant to jet blast and is suitable for concrete runways and hardstandings. Colpor 200PF is suitable for areas where fuel spillage is likely

Uses
For the sealing and maintenance of joints in concrete roads, concrete runways and hard standings. Colpor 200PF is particularly suitable for sealing areas where fuel and oil spillage might occur such as aircraft hardstanding areas, oil terminals, garage forecourts, parking and cargo bays.

Product Details:

Nitoseal MS60 is a one part, low modulus sealant based on hybrid silyl modified polyether ("MS") technology.

Uses

Nitoseal MS60 is suitable for sealing joints in concrete, brickwork, blockwork, perimeter sealing around doors and windows, and non-trafficked floor joints.

Advantages 

• Adhesion to most common building materials 
• Single component with fast rate of cure 
• Easy to apply 
• Can be applied to damp substrates 
• Primerless for most applications (see "Priming") 
• UV resistant and colour stable 
• Performs as an acoustic sealant 
• Available in a range of colours 
• Environmentally friendly

Product Details: