---
product_id: 20552194
title: "SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2\" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion"
brand: "sika"
price: "R502"
currency: ZAR
in_stock: true
category: "Sika"
url: https://www.desertcart.co.za/products/20552194-sika-sikaflex-construction-sealant-white-all-purpose-polyurethane-for-joints
store_origin: ZA
region: South Africa
---

# Paintable & stain-free finish Strong adhesion for lasting seals Weatherproof & waterproof protection SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion

**Brand:** sika
**Price:** R502
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal smart, live worry-free — the last sealant your projects will ever need!

## Quick Answers

- **What is this?** SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion by sika
- **How much does it cost?** R502 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/20552194-sika-sikaflex-construction-sealant-white-all-purpose-polyurethane-for-joints)

## Best For

- sika enthusiasts

## Why This Product

- Trusted sika brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pro-Grade Ease ⚙️:** Compatible with most caulking guns and easy to apply even for DIY beginners.
- • **Unbreakable Bonds 🔒:** Polyurethane formula ensures ultra-strong, flexible seals that resist cracking and tearing.
- • **Certified Quality ✔️:** Meets ASTM and federal standards, reducing radon and guaranteeing trusted performance.
- • **All-Weather Armor 🌧️:** Seals joints against moisture, rain, and temperature extremes for year-round durability.
- • **Invisible Integration 🎨:** Self-leveling, paintable sealant blends seamlessly with surfaces—no unsightly marks or stains.

## Overview

Sikaflex Construction Sealant is a professional-grade, one-component polyurethane sealant designed for joints 1/2" or smaller. It offers superior elasticity and strong adhesion to a variety of materials including brick, wood, concrete, and metal. Weatherproof and waterproof, it prevents moisture infiltration while remaining paintable and stain-free for a clean finish. Certified to ASTM standards, it’s easy to apply with standard caulking guns and cures fully in about a week, making it ideal for durable, flexible, and visually seamless sealing in both residential and commercial projects.

## Description

This one-component, non-sag sealant is the choice for professional-grade quality while requiring only beginner-level DIY skills. It's also elastomeric, which gives the paste a rubbery texture and enables your joints to adjust without cracking or breaking. Seal windows and door perimeters, and fill gaps in walls, trim, flashing, and more. It's resistant to aging and weathering, so the Sikaflex white caulk always looks its best. It's both waterproof and water immersible, enabling use in moisture-heavy environments. The final cure is complete in about a week, depending on atmospheric conditions.

## Features

- TIGHT, STRONG SEALS — This Sika polyurethane sealant offers exceptionally secure adhesion while also allowing for a high elasticity that helps prevent cuts and tears
- WEATHERPROOF YOUR HOME WITH CONFIDENCE — Fills joints between brickwork, masonry, wood, concrete, and metal framing to prevent moisture infiltration
- BLENDS RIGHT IN — It's a self-leveling concrete caulk that you can paint, stain, or sand down so you don't even know it's there. It also won't stain surfaces, so it's easy to use
- TRULY TRUSTWORTHY — This product meets federal specifications and ASTM standards to ensure quality and safety; urethane-based formula reduces the level of radon
- QUICK AND SIMPLE TO USE — It comes in a 10.1 fl oz cartridge that easily pops into most electric, pneumatic, or hand-powered application guns. The narrow tip makes accurate placement worry-free

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000RUOH1Q |
| Best Sellers Rank | #3,331 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Industrial Joint Sealants |
| Brand Name | SIKA |
| Color | White |
| Compatible Material | Plastic |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,004) |
| Global Trade Identification Number | 00033886000413 |
| Included Components | Multitool Accessory |
| Item Dimensions | 11.5 x 2 x 11.5 inches |
| Item Form | Liquid |
| Item Type Name | 10OZ WHT Const Sealant |
| Item Weight | 1 Pounds |
| Manufacturer | SIKA CORPORATION |
| Material Type | Polyurethane |
| Model | 90618 |
| Number of Items | 1 |
| Part Number | 90618 |
| Style Name | Compact |
| Supported Standards | ASTM C-920, TT-S-00230C, Type II |
| Surface Recommendation | Door |
| UPC | 033886000413 033886093873 |
| Unit Count | 1.0 Count |
| Warranty Description | Please reference Manufacture's Product Data Sheet for Warranty Information |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SIKA
- **Item Weight:** 1 Pounds
- **Item dimensions L x W x H:** 11.5 x 2 x 11.5 inches
- **Material:** Polyurethane
- **Style:** Compact

## Images

![SIKA Sikaflex Construction Sealant - White, All-Purpose Polyurethane for Joints 1/2" or Smaller - 10.1 fl. oz - Weatherproof, High Elasticity, Paintable, Strong Adhesion - Image 1](https://m.media-amazon.com/images/I/61dY-QHD3CL.jpg)

## Available Options

This product comes in different **Color, Number Of Items** options.

## Questions & Answers

**Q: can this be used in-between cement joints in a walkway?**
A: Sika’s self-leveling sealant (and backer rod) is the most appropriate product for that situation. The backer rod prevents 3 point adhesion, which you should look up before performing this job. Self-leveling sealant will flow downhill if used on a slope, so the construction sealant might be a better choice in that particular case.

**Q: If used to fill gaps between tiles, how does this (polyurethane) compare with epoxy grout ?**
A: This has a silicone texture, I will use it in for the outdoor area. I would not use this to fill gaps between tiles, you should use epoxy grout especially if it's indoor.

**Q: Will this adhere to asphalt for the crack between driveway and cement apron? I’d rather use a weatherproof flexible sealant than asphalt cold patch.**
A: It should!  This was recommended by the company who raised up three LARGE concrete patio slabs.  Unfortunately, the slabs had all moved in different directions, letting water sit up against the foundation. Once raised up, with settling of earth underneath, a couple of the slabs cracked.  I used this sealant to  fix those cracks.  It's remained in place through two Pacific Northwest (wet) winters.  It's remained flexible, keeping slab pieces together with no slippage.  Good product!

**Q: Can I throw some sand on top of  horizontal morter cracks after applying the Sikaflex to give it texture?**
A: I think you can. Think of it as a kind of epoxy. If you throw some sand on its surface before it dries, the sand will end up imbedded in it.

## Frequently Bought Together

- SIKA 90618 Sikaflex Construction, 10.1 fl. oz, White 10OZ WHT Const Sealant, 10-Ounce
- Newborn Octogun 930-GTD Drip-Free Caulking Gun - Gator Trigger Grip | Fits 1/10 Gallon Cartridge |10:1 Thrust Ratio | Smooth Hex Rod Cradle with Built-in Smoother Tool | Scraper & Plug Included
- Sikaflex Crack Flex Sealant, Gray, High performance, textured polyurethane sealant, self-leveling, sealant for sealing horizontal cracks, 10,1 fl. Oz

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-05-08*