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Sikaflex 1A
Sikaflex 1A
Non-sag polyurethane joint sealant
Sika Sikaflex 1A is a one-component sealant for moving construction joints. Select your color and package to order, or request pricing for your project quantities.
ASTM C920 · Class 35+/-35% joint movement
Sikaflex 1A color chart
10.1 fl oz cartridges and 20 fl oz sausages.
Aluminum Gray
Black
Limestone
Colonial White
Dark Bronze
Capitol Tan
Stone
Medium Bronze
Cartridge only in this range.
Swatches are approximate. Approve the color against a physical sample before ordering.
Check current pricing, availability and quantity requirements on the selected product page.
Ordering for a project?
Include the color, package, quantity, delivery ZIP and required-on-site date when requesting pricing.
Technical data & submittals
| Material & performance | |
|---|---|
| Chemistry | One-component, moisture-cured polyurethane; non-sag. |
| Movement | +/-35%; ASTM C920 Class 35. |
| Service temperature | -40 to +170 F. |
| Potable-water certification | NSF/ANSI/CAN 61. Observe Sika's immersion limitations. |
| Application & storage | |
| Application temperature | 40 to 100 F. |
| Tack-free / cure | 3-6 hours / 4-7 days at 73 F and 50% RH. |
| Joint depth | 1/4-1/2 in.; traffic joints require 1/2 in. |
| Unopened shelf life | Cartridge: 15 months. Sausage: 18 months. |
| Storage temperature | 40 to 95 F. |
Coverage for estimating
Linear feet per individual package at the listed joint dimensions. Allow for waste and field conditions.
| Joint sizeWidth x depth | Cartridge10.1 fl oz | Sausage20 fl oz |
|---|---|---|
| 1/4 x 1/4 in. | 24.3 ft | 48.1 ft |
| 1/2 x 1/4 in. | 12.1 ft | 24.1 ft |
| 1/2 x 1/2 in. | 6.1 ft | 12.0 ft |
| 3/4 x 1/2 in. | 4.0 ft | 8.0 ft |
Application reference
Typical specified uses
- Vertical and horizontal construction joints
- Window and door perimeters
- Reglets, flashing and roofing details
Follow the current data sheet, SDS and project joint design.
- Priming
- Based on adhesion testing and exposure; immersion may require primer.
- Joint backing
- Use backer rod or bond-breaker tape to prevent three-sided adhesion.
- Overcoating
- Allow 7 days; test paint adhesion and compatibility.
- Package / applicator
- Match cartridge or sausage format to the applicator. Confirm case packs separately from individual package volume.
Ordering & specification questions
For quantities, delivery requirements or documentation, call (888) 809-2365.
Can I request pricing for project quantities?
Yes. Contact Indcon with your color, package, quantity, delivery ZIP and required-on-site date. Confirm the applicable price, case pack and delivery details before ordering.
Are all colors available in both packages?
The listed range includes nine cartridge colors and eight sausage colors. Medium Bronze is listed in cartridges only. Open the relevant product page to check current details and availability.
Can Sikaflex 1A be applied to green or damp concrete?
Green concrete: minimum 24 hours at 75 F, with Sika's specified joint-opening times. Damp concrete: remove excess water, then wait at least 60 minutes. See full preparation requirements.
Where can I get the Sikaflex 1A data sheet?
Download the manufacturer PDF for technical data, coverage and limitations. For the applicable safety data sheet, use the Sika product-page link above.
Sikaflex 1AChoose color & package
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