Waterproofing brands:Which are searched most?
In September 2026, Foundation was the most searched among waterproofing brands worldwide, with an estimated 824K branded searches and 59.6% estimated Share of Search within this set. These are worldwide searches for English-language branded terms.
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Share of SearchLeaderboard
Compare the waterproofing brands people buy. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for Foundation, Sika, Mapei, Bostik, Ardex. The figures are in the table below the chart.
View monthly share of search table
| Month | Foundation | Sika | Mapei | Bostik | Ardex | Fosroc | Guru | Slab |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 61.6% | 22.6% | 8.3% | 3.7% | 2% | 1.7% | 0.04% | <0.01% |
| Nov 2025 | 63% | 18.9% | 10.4% | 3.8% | 2.1% | 1.7% | 0.03% | <0.01% |
| Dec 2025 | 61.5% | 22.5% | 8.2% | 3.7% | 2% | 2% | 0.04% | <0.01% |
| Jan 2026 | 64.4% | 19.4% | 8.7% | 3.9% | 2.1% | 1.4% | 0.04% | <0.01% |
| Feb 2026 | 59.9% | 21.9% | 9.8% | 4.4% | 2.4% | 1.6% | 0.05% | 0.01% |
| Mar 2026 | 56.8% | 25.3% | 9.3% | 4.2% | 2.8% | 1.5% | 0.06% | <0.01% |
| Apr 2026 | 59.7% | 21.8% | 9.8% | 4.4% | 2.4% | 2% | 0.05% | 0.01% |
| May 2026 | 60.1% | 22% | 9.9% | 3.6% | 2.4% | 2% | 0.05% | <0.01% |
| Jun 2026 | 55.2% | 24.7% | 11.1% | 4.1% | 2.7% | 2.2% | 0.06% | <0.01% |
| Jul 2026 | 55.2% | 24.7% | 11.1% | 4.1% | 2.7% | 2.2% | 0.06% | <0.01% |
| Aug 2026 | 61.2% | 22.4% | 8.2% | 3.7% | 2.5% | 2% | 0.04% | <0.01% |
| Sep 2026 | 59.6% | 21.8% | 9.8% | 4.4% | 2.4% | 2% | 0.03% | <0.01% |
This month’s ranking, September 2026
| Rank | Brand | Share of Search | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 59.6% | 824K | -0.02% | -1.6 points | |
| 2, held 2nd | 21.8% | 301K | 0% | -0.6 points | |
| 3, held 3rd | 9.8% | 135K | +22.7% | +1.6 points | |
| 4, held 4th | 4.4% | 60.5K | +22.2% | +0.7 points | |
| 5, held 5th | 2.4% | 33.1K | 0% | -0.1 points | |
| 6, held 6th | 2% | 27.1K | 0% | -0.1 points | |
| 7, held 7th | 0.03% | 460 | -16.4% | 0 points | |
| 8, held 8th | <0.01% | 110 | 0% | 0 points |
59.6%
Held 1st. 824K estimated branded searches, -0.02% vs prior month. Share -1.6 points.
2.
Sika21.8%
Held 2nd. 301K estimated branded searches, 0% vs prior month. Share -0.6 points.
3.
Mapei9.8%
Held 3rd. 135K estimated branded searches, +22.7% vs prior month. Share +1.6 points.
4.
Bostik4.4%
Held 4th. 60.5K estimated branded searches, +22.2% vs prior month. Share +0.7 points.
5.
Ardex2.4%
Held 5th. 33.1K estimated branded searches, 0% vs prior month. Share -0.1 points.
6.
Fosroc2%
Held 6th. 27.1K estimated branded searches, 0% vs prior month. Share -0.1 points.
7.
Guru0.03%
Held 7th. 460 estimated branded searches, -16.4% vs prior month. Share 0 points.
8.
Slab<0.01%
Held 8th. 110 estimated branded searches, 0% vs prior month. Share 0 points.
Compare search popularity between leading brands

Foundation vs Sika: compare search popularity
Foundation vs Mapei: compare search popularity
Foundation vs Bostik: compare search popularity
Foundation vs Ardex: compare search popularity
Sika vs Mapei: compare search popularity
Sika vs Bostik: compare search popularity
Sika vs Ardex: compare search popularity
Mapei vs Bostik: compare search popularity
Mapei vs Ardex: compare search popularity
Bostik vs Ardex: compare search popularity- Compare any of these brands
Which brand is most popular in search among waterproofing brands worldwide?
8 brands
In September 2026, Foundation was the most searched among waterproofing brands worldwide, with an estimated 824K branded searches and 59.6% estimated Share of Search within this set. Sika is in 2nd place, 37.8 percentage points behind at 21.8% Share of Search.
| Brand | Share of Search | Peak | Low | Rank |
|---|---|---|---|---|
| 61.6% → 59.6% | 64.4%Jan 2026 | 55.2%Jun 2026 | 1st | |
| 22.6% → 21.8% | 25.3%Mar 2026 | 18.9%Nov 2025 | 2nd | |
| 8.3% → 9.8% | 11.1%Jun 2026 | 8.2%Aug 2026 | 3rd | |
| 3.7% → 4.4% | 4.4%Feb 2026 | 3.6%May 2026 | 4th | |
| 2% → 2.4% | 2.8%Mar 2026 | 2%Dec 2025 | 5th | |
| 1.7% → 2% | 2.2%Jun 2026 | 1.4%Jan 2026 | 6th | |
| 0.04% → 0.03% | 0.06%Mar 2026 | 0.03%Sep 2026 | 7th | |
| <0.01% | 0.01%Feb 2026 | <0.01%Nov 2025 | 8th |
Each finding as a sentence
- Across the 12 months ending September 2026, Foundation’s estimated Share of Search among waterproofing brands worldwide decreased from 61.6% to 59.6%.
- Across the 12 months ending September 2026, Sika’s estimated Share of Search among waterproofing brands worldwide decreased from 22.6% to 21.8%.
- Across the 12 months ending September 2026, Mapei’s estimated Share of Search among waterproofing brands worldwide increased from 8.3% to 9.8%.
- Across the 12 months ending September 2026, Bostik’s estimated Share of Search among waterproofing brands worldwide increased from 3.7% to 4.4%.
- Across the 12 months ending September 2026, Foundation’s estimated Share of Search among waterproofing brands worldwide peaked at 64.4% in January 2026 and was lowest at 55.2% in June 2026.
- Across the 12 months ending September 2026, Sika’s estimated Share of Search among waterproofing brands worldwide peaked at 25.3% in March 2026 and was lowest at 18.9% in November 2025.
- Across the 12 months ending September 2026, Mapei’s estimated Share of Search among waterproofing brands worldwide peaked at 11.1% in June 2026 and was lowest at 8.2% in August 2026.
- Across the 12 months ending September 2026, Ardex, Fosroc, Guru and Slab held steady: their estimated Share of Search among waterproofing brands worldwide each moved less than 0.5 percentage points.
How did search popularity change for waterproofing brands worldwide in September 2026?
6 changes

In September 2026, Mapei gained estimated Share of Search among waterproofing brands worldwide, from 8.2% to 9.8%.

In September 2026, Bostik gained estimated Share of Search among waterproofing brands worldwide, from 3.7% to 4.4%.

In September 2026, Foundation lost estimated Share of Search among waterproofing brands worldwide, from 61.2% to 59.6%.

In September 2026, Sika lost estimated Share of Search among waterproofing brands worldwide, from 22.4% to 21.8%.

Estimated monthly branded searches for Guru worldwide fell 32.4% over 12 measured months, from 680 to 460 in September 2026.

Estimated monthly branded searches for Slab worldwide fell 21.4% over 12 measured months, from 140 to 110 in September 2026.

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