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Sika Flex

Name: Sika Flex
Brand: Sika
SKU: 1732
Availability: InStock

₨4,200.00

Elastomeric joint sealant / adhesive

Sikaflex®-1A is a 1-part, polyurethane, coloured, moisture curing non-sag elastomeric sealant. Movement capability ±35 %. Internal and external use.

1-part no mixing equipment required
Fast tack-free and final cure times
High elasticity and flexibility
Suitable for use in most global conditions
Can be applied to green concrete 24 hours after pour
Can be applied to damp concrete 1 hour after getting wet

Category: Waterproofing Brand: Sika

Usage

Sealing joints for:

Adhesive for:

Most construction components and materials

Advantages

1-part no mixing equipment required
Fast tack-free and final cure times
High elasticity and flexibility
Good cut and tear resistance
Low stress on substrate
Good adhesion to many construction materials
Primerless for most substrates and applications
Resistant to weathering and ageing
Suitable for use in most global conditions
Can be applied to green concrete 24 hours after pour
Can be applied to damp concrete 1 hour after getting wet
Low VOC emissions
Resistant to jet fuel exposure
Certified to the NSF/ANSI Standard 61 for potable water
Urethane-based, suggested by EPA for radon reduction
Over-paintable with oil and rubber based paints
Movement capability ± 35 % (ASTM C 719)

Shore A Hardness

~40 (after 21 days)	(ASTM C 661)
~40 (after 28 days)	(ISO 868)

Secant Tensile Modulus

~0,55 N/mm²(80 psi) at 60 % elongation (23 °C)	(ISO 8339)
~0,90 N/mm² (131 psi) at 60 % elongation (−20 °C)

Tensile stress at specified elongation

25 %	~35 psi (0,24 N/mm²)
50 %	~60 psi (0,41 N/mm²)
100 %	~85 psi (0,59 N/mm²)

Elastic Recovery

~90 %

(ISO 7389)

Adhesion in Peel

Substrate	Peel Strength	Adhesion loss
Concrete	~20 lbs (~9 kg)	0 %
Aluminium	~20 lbs (~9 kg)	0 %
Glass	~20 lbs (~9 kg)	0 %

Tear Strength

~55 lbs./in. (~10 N/ mm)

(ASTM D 624)

Movement Capability

±35 %	(ASTM C 719)
±25 %	(ISO 9047)

Chemical Resistance

Resistant to many chemicals. Contact Sika Technical Services for additional information

Resistance to Weathering

0 (no cracks)

(ASTM C 793)

Service Temperature

−40 °F to +170 °F (−40 °C to +77 °C)

Joint Design

The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be ≥ 6,0 mm (¼ inch) and ≤ 40 mm (1 ½ inch). The joint depth must be ≥ 6,0 mm (¼ inch) and ≤ 12 mm (½ inch). For joints in facades a width to depth ratio of 2:1 must be maintained (for exceptions, see table below). For floor joints a width to depth ratio of 1:0.8 must be maintained. For use in horizontal joints in traffic areas, the absolute minimum depth of the sealant is 12 mm (½ inch).

Standard joint widths for joints between concrete facade elements:

Convert table below to imperial units if required.

Standard joint widths for joints between concrete facade elements:

Joint distance m	Min. joint width mm	Min. joint depth mm
2	10	10
4	15	10
6	20	10
8	28	14
10	35	17

The above information is for guidance only. All joints must be correctly designed and dimensioned in accordance with the relevant national standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are the type of structure, dimensions, technical values of the adjacent building materials, joint sealing material and the specific exposure of the building and the joints.

Consumption

Joint width mm	Joint depth mm	Joint length m per sausage (600 ml)
10	10	6
15	10	4
20	10	3
25	12	2
30	15	1,3

Joint width mm	Joint depth mm	Joint length m per cartridge (300 ml)
10	10	3
15	10	2
20	10	1,5
25	12	1
30	15	0,65

Joint width inch	Joint depth inch	Joint length ft per sausage (20 fl.oz.)
¹/₂	¹/₄	24,4
³/₄	³/₈	5,4
1	¹/₂	3
1¹/₂	³/₄	1,4

Joint width inch	Joint depth inch	Joint length ft per cartridge (10 fl.oz.)
¹/₂	¹/₄	12,2
³/₄	³/₈	5,4
1	¹/₂	3
1¹/₂	³/₄	1,4

Joint width inch	Joint depth inch	Joint length ft per gallon
¹/₂	¹/₄	154
³/₄	³/₈	68,4
1	¹/₂	38,5
1¹/₂	³/₄	17,1

Joint width inches	Joint depth inches	Joint length ft per gallon
¹/₄	¹/₄	308
³/₈	¹/₄	205
³/₈	³/₈	137
¹/₂	¹/₄	154
¹/₂	³/₈	102
¹/₂	¹/₂	77
³/₄	¹/₄	103
³/₄	³/₈	68
³/₄	¹/₂	51
1	¹/₂	39
1¹/₄	¹/₂	31
1¹/₂	¹/₂	26

Consumption depends on the roughness and absorbency of the substrate.

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.

Download SikaFlex-1A Product Data Sheet

Packaging	10 fl. oz. cartridge, 12 cartridges per box 20 fl. oz. foil pack, 20 foil packs per box 5 gallon pail 55 gallon drum Refer to current price list for packaging variations
Colour	Colour range to be defined by local sales organisation.
Sustainability / Certifications / Approvals	ENVIRONMENTAL INFORMATION Add local certificates here APPROVALS / STANDARDS Certified to NSF/ANSI standard 61 for portable water Add local approvals / certificates here
Product Information	Chemical Base Polyurethane Shelf Life Cartridges and foil packs: 12 months from date of production Pails and drums: 6 months from date of production Storage Conditions The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +41 °F and +77 °F (+5 °C and +25 °C). Always refer to packaging.
Application Information	Backing Material Use closed cell, polyethylene foam backing rods. Ambient Air Temperature +40 °F to +100 °F (+4 °C to +38 °C) Substrate Temperature +40 °F to +100 °F (+4 °C to +38 °C). Min. 5 °F (3 °C) above dew point temperature Sealants must be installed when substrates are at mid-range of their anticipated movement. Skin Time ~160 minutes (23 °C / 50 % r.h.) (CQP 019-1) Tack Free Time ~160 minutes (23 °C / 50 % r.h.) (ASTM C 679)`
Application Steps	SUBSTRATE PREPARATION The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded paint coatings which could affect adhesion of the sealant. The substrate must be of sufficient strength to resist the stresses induced by the sealant during movement. Removal techniques such as wire brushing, grinding, grit blasting or other suitable mechanical tools can be used. Repair all damaged joint edges with suitable Sika repair products New or refurbished joints must be saw-cut. Where joints in substrate are saw cut. After sawing, all slurry material, must be flushed away and joint surfaces allowed to dry. All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or sealant. Sikaflex®-1A adheres without primers and/or activators. For optimum adhesion, joint durability and critical, high performance applications such as joints on multi-storey buildings, highly stressed joints, extreme weather exposure or water immersion / exposure. The following priming and/or pre-treatment procedures must be followed: Non-porous substrates Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles. Slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. Before sealing, allow a waiting time of > 15 minutes (< 6 hours). Other metals, such as copper, brass and titanium-zinc, cleaned and pre-treat using Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours). Apply Sika® Primer-3 N applied by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours) PVC has to be cleaned and pre-treated using Sika® Primer-215 applied with a brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours). Porous substrates Concrete, aerated concrete and cement based renders, mortars and bricks must be primed using Sika® Primer-3 N applied with a brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours). Adhesion tests on project specific substrates must be performed and procedures agreed with all parties before full project application. Contact Sika Technical Services for additional information. Note: Primers and activators are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long term adhesion performance of the sealed joint. If products mentioned above are not available in local country, replace with the appropriate local products. For green concrete applications control joints must be cut 8 hours prior to sealant installation. Expansion joint forms must be removed 4 hours prior to sealant installation. For wet concrete applications all excess or standing water must be displaced and concrete must then dry for a minimum of 60 minutes prior to sealant installation. Sikaflex-1a can be applied on green concrete after the concrete has cured for a minimum of 24 hours at +75 °F (+25 °C). MIXING 1-part ready to use CLEANING OF TOOLS Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically. For cleaning skin use Sika® Cleaning Wipes-100.