What Siparila Oy does

Siparila Oy is a Finnish wood products manufacturer founded in 2003 and headquartered in Vaajakoski (Jyväskylä), Finland, operating as a subsidiary of Thermory Group. The company specializes in thermally modified wood panel and cladding products, applying a heat-treatment process above 180°C in a controlled steam environment combined with factory-applied surface finishing (painting, staining) to produce durable, dimensionally stable, and chemical-preservative-free wood products. Siparila's core technology stack also includes concealed fastening systems and end-jointing (Päätyponttaus) tongue-and-groove technology that reduces installation labor and material waste. The product portfolio spans four primary categories: exterior cladding panels (including pre-finished TOPCOAT®, heat-treated translucent variants, and fire-retardant P1-classified panels), interior wall panels (covering dry areas, wet areas, and saunas under multiple design lines such as STRUKTUURI, Kaski, KOO, Kuulas, VIRE, and others), interior mouldings (skirting boards and ceiling trims under KIILLE, KINOS, VANA, KUMPU families), and terrace/landscaping products (THERMODECK thermally modified decking). The company also sells cutter dust bales through a dedicated e-commerce store.

Siparila generates revenue through three primary channels: direct-to-consumer e-commerce (kauppa.siparila.fi), a domestic Finnish reseller and retailer network with a dedicated professional portal, and international distribution partnerships — most notably CP Supply covering western US states (Montana, Utah, Idaho, Colorado, reaching Texas). Customer segments span individual homeowners and cottage builders, professional builders and contractors, architects and interior designers, building materials retailers, and international distributors. Standard catalog products are priced on a per-unit basis; custom project orders follow a quote-based pricing model with 30-day quote validity and typically advance payment terms. Manufacturing is distributed across five Finnish facilities (Vaajakoski, Parkano, Myllykoski, Teuva, Laukaa), and products use PEFC-certified Finnish timber under the Design from Finland designation.

The business is currently in a transition phase: founder Juha Sojaka handed over the CEO role to Janne Seilo effective May 8, 2025, a forest-industry veteran from UPM and Metsä Group recruited explicitly to drive international expansion. The company carries PEFC certification for sustainable forestry and a Design from Finland Mark, with TOPCOAT® pre-finished products backed by a minimum 10-year warranty. No funding rounds, M&A activity, or public-market exposure are documented in the available material; ownership remains within the Thermory Group corporate structure.

Name

Siparila Oy

Legal name

Siparila Oy

Website

https://siparila.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

51–100 employees

Short description

Siparila Oy is a Finnish manufacturer of thermally modified wood panels, cladding, mouldings, and terrace products, serving homeowners, professional builders, architects, retailers, and international distributors through five domestic production facilities, e-commerce, and export partnerships.

Ownership category

akta.pro rank

Headquarters

HQ city

Vaajakoski

HQ country

Finland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Wood Panel Products: Sales of exterior cladding panels, interior panels, mouldings, and landscaping products (decking, battens). Products sold as standard catalog items or custom project products. Revenue generated through direct sales, online store, and reseller network.
2. Online Store Products: Direct-to-consumer sales through company's e-commerce platform including bulk products like cutter dust bales for animal bedding and garden coverage. Additional product category for incidental items.
3. Project/Custom Products: Custom-profile products, colors, and specifications manufactured for individual customer projects based on quotes. Pricing determined per project with 30-day quote validity.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Siparila Oy manufactures and sells thermally modified wood products for construction and interior design, including exterior cladding panels (with TOPCOAT pre-finished and fire-retardant variants), interior wall and sauna panels, interior mouldings (skirting and ceiling trims), and terrace/garden products (including THERMODECK boards). The company uses proprietary thermal modification (>180°C) and factory-applied finishing with concealed fastening and end-jointing, distributing through its own online store, a Finnish reseller network, and international export partners.

Product overview

Siparila Oy is a Finnish wood products manufacturer offering a comprehensive portfolio of wood-based building and interior solutions. The core product lines include exterior cladding panels (ulkoverhouspaneelit) available in heat-treated, pre-finished TOPCOAT®, and fire-resistant variants; interior panels (sisustuspaneelit) for dry, wet, and sauna areas including named designs such as STRUKTUURI, Kaski, KOO, Kuulas, VIRE, Puro, Sola, Kaste, Jalo, Railo, Aava, Höylähirsi, and Kuura; interior mouldings (sisustuslistat) including KIILLE, KINOS, VANA, and KUMPU product families; and terrace/garden products (piharakentaminen) featuring THERMODECK thermally modified terrace boards. Products are manufactured in Finland using PEFC-certified Finnish timber and are distributed through an online shop, retailers, and professional channels.

Differentiator

Problem solved

Functional benefit

Products and services

• Exterior Cladding Panels (Ulkoverhouspaneelit) Exterior wood cladding panels made from Finnish timber, available in various profiles, colors, and treatments including heat-treated (LUCID, NATURAL TONES), pre-finished TOPCOAT, surface-painted, and fire-resistant variants for residential and commercial facades.
• TOPCOAT Pre-Finished Cladding Panels Factory-pre-finished thermally modified exterior cladding panels with concealed fastening and end-jointing, enabling installation in any weather with immediate weather resistance and a minimum 10-year warranty.
• Fire-Resistant Panels (Palosuojatut paneelit) Fire-retardant-treated wood panels meeting P1 fire safety requirements, available as pre-finished, intermediate-painted, and translucent variants for use in buildings where fire regulations restrict standard wood.
• Interior Panels (Sisustuspaneelit) Real-wood interior wall and ceiling panels for dry and wet areas including saunas, encompassing a design range such as STRUKTUURI (brushed), Aava, Kaski, KOO, KUULAS, VIRE, PURO, SOLA, KASTE, JALO, RAILO, Höylähirsi, and Kuura, with concealed fastening and end-jointing.
• Interior Mouldings (Sisustuslistat) Interior mouldings made from Finnish pine and spruce including skirting boards (KIILLE, KINOS, KUMPU, VANA, VIIVA), ceiling trims (KIILLE, KINOS, VANA), and cover boards, available in various profiles and white finishes.
• Terrace and Garden Products (Piharakentaminen) Landscaping and outdoor products including THERMODECK Classic thermally modified terrace boards, fence planks, railing planks, and slat battens (Säleikkörima series), designed for outdoor durability with reduced surface cracking.
• THERMODECK Classic Terrace Board Thermally modified terrace board combining stylish appearance with enhanced durability and reduced surface cracking for outdoor deck applications; an environmentally friendly choice made from PEFC-certified Finnish timber.
• Cutter Dust Bales (Purupaalit) PEFC-certified Finnish cutter-grass bales compressed and packaged in plastic, sold via the online shop for use as animal bedding or garden cover, with tiered pallet pricing (1-pallet to 28-pallet batches).
• Custom Project Products Bespoke wood-panel products manufactured to custom profiles, colors, and specifications for individual construction projects, quoted directly by the sales team with 30-day quote validity.

Quantifiable outcome

• Pre-finished panels eliminate on-site painting, reducing labor costs and project timeline
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• CP SupplycoreChannel Partner/ Reseller/ DistributorUS-based building and interior materials distributor and export partner. CP Supply resells Siparila's thermally modified exterior cladding panels (98% of their purchased products) to builders across western US states including Montana, Utah, Idaho, Colorado, and as far as Texas. Partnership began when CP Supply sought quality exterior materials for residential and multi-story projects.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Stora Enso: Stora Enso is a leading Finnish-Swedish forest products company producing wood panels, building components, and timber solutions. It is comparable as a Nordic wood-products manufacturer with overlapping exterior cladding, panel, and millwork offerings.
• LP Building Solutions: LP Building Solutions is a North American manufacturer of engineered wood siding, panels, and structural products. It is comparable as an exterior cladding and panel incumbent selling to residential builders — directly relevant to Siparila's US channel expansion.
• James Hardie: James Hardie is a global leader in fiber cement exterior cladding and building products. It is comparable as a primary alternative material to Siparila's exterior cladding, competing for the same residential and commercial exterior wall applications.
• Thermory: Thermory is the parent company's flagship brand and a leading producer of thermally modified wood decking, cladding, and interior products. It is directly comparable as Siparila operates within Thermory Group and shares thermal modification technology, distribution channels, and wood-product categories.
• UPM: UPM is a major Finnish forest industry group producing plywood, veneers, and engineered wood products. It is comparable as a Finnish wood building materials supplier overlapping with Siparila's panel and timber categories, and notably the previous employer of Siparila's new CEO.
• Inwido: Inwido is a Nordic manufacturer of windows and doors that also produces wood-based interior panels and mouldings. It is comparable in mouldings, interior paneling, and serving residential construction channels in the Nordics.
• Metsä Wood: Metsä Wood is a major Finnish/European manufacturer of engineered wood products including cladding, panels, and millwork. It is comparable as a Finnish wood-products incumbent overlapping with Siparila's interior panels, mouldings, and structural timber categories.

Direct peers

• Lunawood: Lunawood is a Finnish manufacturer of thermally modified wood products for both interior and exterior use, including cladding, decking, and sauna materials. It is the closest direct competitor to Siparila in Nordic thermo-wood cladding, decking, and interior panels.
• Moelven: Moelven is a Nordic wood-products manufacturer producing interior panels, exterior cladding, mouldings, and timber building materials. It is directly comparable in product range and target customers in the Nordic construction and renovation market.

Emerging players

• Firemill: Firemill is a Finnish producer of fire-retardant treated wood products for construction. It is comparable as a niche specialty player in fire-rated wood panels, directly overlapping with Siparila's fire-resistant panel product line.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Siparila
• LinkedInlinkedin.com/company/siparila-oy
• Instagraminstagram.com/siparila
• Pinterestfi.pinterest.com/siparila

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Siparila Oy