Verified Nov 2026
Other
·
Arkadelphia, Arkansas
·
Since 1979
Siplast develops and manufactures commercial roofing, waterproofing, and building enclosure products, including SBS-modified bitumen membranes and liquid-applied systems. Founded in 1979 and headquartered in Arkadelphia, Arkansas, United States, the company employs roughly 200 to 500 people, with estimated revenue of $10 to $50 million. It serves the construction, automotive, electric-vehicle, and industrial equipment sectors. In 2026, Siplast's WALLcontrol AWB System was used to create a continuous barrier across 500,000 square feet of cladding at T5's 54-megawatt data center campus in Hillsboro, Oregon.
Siplast at a glance
Revenue
$10-50M
Est. band
Employees
200-500
Founded
1979
Headquarters
Arkadelphia, Arkansas
Import activity
214
Industries
Automotive
Electric Vehicles
Construction
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
214
Named foreign suppliers
30
Top origins
Germany · France · Belgium · South Korea
Shared foreign counterparties do not establish that these companies buy from Siplast.
What this tells a buyer
Trade and customs records were not available in the source data, but Siplast announced in 2026 that its WALLcontrol AWB System was specified for a 500,000-square-foot data center campus in Hillsboro, Oregon.
The company's listed products include assembly-related offerings, and its public materials describe SBS-modified bitumen membranes, liquid-applied products, and lightweight insulating concrete systems for commercial roofing and waterproofing.
Siplast is a privately held company that reports being part of Standard Industries, and it is listed with no public ticker.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
Overview
Siplast develops and manufactures commercial roofing, waterproofing, and building enclosure products, including SBS-modified bitumen membranes and liquid-applied systems. Founded in 1979 and headquartered in Arkadelphia, Arkansas, United States, the company employs roughly 200 to 500 people, with estimated revenue of $10 to $50 million. It serves the construction, automotive, electric-vehicle, and industrial equipment sectors. In 2026, Siplast's WALLcontrol AWB System was used to create a continuous barrier across 500,000 square feet of cladding at T5's 54-megawatt data center campus in Hillsboro, Oregon.
At a glance
Attribute | Detail |
|---|---|
Founded | 1979 |
Headquarters | Arkadelphia, Arkansas |
Employees | 200-500 |
Revenue | $10-50M (estimated) |
What Siplast makes
The company's listed products include assembly-related offerings, and its public materials describe SBS-modified bitumen membranes, liquid-applied products, and lightweight insulating concrete systems for commercial roofing and waterproofing.
Products and capabilities described on the company's own site include Assembly (source: siplast.com).
Trade and customs footprint
Trade and customs records were not available in the source data, but Siplast announced in 2026 that its WALLcontrol AWB System was specified for a 500,000-square-foot data center campus in Hillsboro, Oregon. US customs bill-of-lading records list 214 inbound shipments across 30 foreign suppliers, with top origins including Germany · France · Belgium · South Korea.
Latest developments
2026-09-11 — Mission critical facilities can't afford downtime, and that starts with the building enclosure. When T5 broke ground on a 500,000 sq. ft. data center campus in Hillsboro, Oregon, nearly the entire structure … | Siplast (linkedin.com)
2026-05-28 — To protect T5’s new 54-megawatt Hillsboro campus, the Siplast WALLcontrol™ AWB System was utilized to create a seamless, high-durability barrier across 500,000 sq. ft. of diverse cladding materials. This liquid-applied STPE solution … | Siplast (linkedin.com)
2026-05-05 — Roof and Wall Coverage from a Single Source Elevating the Building Enclosure with Siplast WALLcontrol (siplast.com)
2026-04-03 — From Puzzles to Products How Tom Stuewe Is Driving Innovation at Siplast (siplast.com)
2026-03-12 — Siplast to Exhibit Roofing Systems at IIBEC 2026 | Roofing Contractor (roofingcontractor.com)
2025-11-05 — Siplast Launches New Below-Grade Waterproofing Solutions | Building Enclosure (buildingenclosureonline.com)
Facilities
Siplast is headquartered in Arkadelphia, Arkansas. Public sources also reference these locations:
Arkadelphia, Arkansas — roofingmagazine.com
Company details
Siplast is a privately held company that reports being part of Standard Industries, and it is listed with no public ticker. Siplast was founded in 1979, has an estimated 200-500 employees, and is headquartered in Arkadelphia, Arkansas.
Frequently asked questions
What does Siplast do?
Siplast develops and manufactures commercial roofing, waterproofing, and building enclosure products, including SBS-modified bitumen membranes and liquid-applied systems. Founded in 1979 and headquartered in Arkadelphia, Arkansas, United States, the company employs roughly 200 to 500 people, with estimated revenue of $10 to $50 million. It serves the construction, automotive, electric-vehicle, and industrial equipment sectors. In 2026, Siplast's WALLcontrol AWB System was used to create a continuous barrier across 500,000 square feet of cladding at T5's 54-megawatt data center campus in Hillsboro, Oregon.
Where is Siplast headquartered?
Siplast is headquartered in Arkadelphia, Arkansas (1111 Highway 67 S, Arkadelphia, Arkansas, 71923-6376).
When was Siplast founded?
Siplast was founded in 1979.
How big is Siplast?
Siplast has an estimated 200-500 employees, with revenue in the $10-50M range (estimated).
Does Siplast import from overseas suppliers?
US customs bill-of-lading records show 214 inbound shipments for Siplast, with top origins including Germany · France · Belgium · South Korea.
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Last verified Nov 2026. Is this your company? Request a correction.
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