
Sawmill and planing mill for sawn timber, structural timber, planed products and packaging wood made from spruce, fir and Douglas fir
Bay Holzwerk GmbH
Großerlach-MannenweilerNew on Amplifa
About Bay Holzwerk
Bay Holzwerk GmbH is a sawmill and planing mill in Großerlach-Mannenweiler in the Swabian-Franconian Forest, family-owned since 1898 and today run in the 5th generation by Matthias and Manuel Bay. The company primarily converts roundwood sourced within a radius of 50–70 km into spruce, fir and Douglas fir and produces saw-rough sawn timber such as construction lumber, cross-section and squared timber, frames, boards, planks and laths up to a cross-section of 38x38 cm and a maximum length of 14.50 m. In the company's own planing mill, planed boards, tongue-and-groove profiles and decking boards are produced; in addition, the mill manufactures structural timber (MH solid wood, KVH, BSH/glulam) as well as packaging wood for crates and pallets, also heat-treated in accordance with IPPC/ISPM 15. Value-added services include technical timber drying in five chambers, cutting and cross-cutting to the millimetre, stamping, blue-stain protection as well as kiln pressure impregnation in cooperation. A sorting and stacking system network, a brand-new gang saw and the company's own residual wood utilisation via wood-chip heating and a wood gasifier complete the operation. Customers come from timber and civil construction, landscaping, the packaging industry and interior fitting; goods are collected exclusively ex works.
- Site
- Großerlach
- Processes
- Sawing (sawing roundwood into sawn timber), Planing (two- and four-sided, with or without chamfer), Producing tongue-and-groove profiles, Planing ribbed profiles for decking boards, Milling grooves, Cutting & cross-cutting (package or single cross-cutting to exact length), Technical timber drying (fresh-air/exhaust-air drying chambers), IPPC heat treatment according to ISPM No. 15 (TÜV-monitored and registered)
- Materials
- Spruce, Fir, Douglas fir, OSB board (coarse particleboard), OSB boards 15/18/22 mm
- Certificates
- PEFC (certification system for sustainable forest management), IPPC/ISPM 15 heat treatment (TÜV-monitored and registered), Energy-conscious company (ICG, SpaEfV Appendix 2), MH-MassivHolz (member of the manufacturer association), PEFC (sustainable forest management), IPPC/ISPM 15 heat treatment (TÜV-monitored), MH-MassivHolz manufacturer association
- Founded
- 1898
- Industries
- Timber construction/carpentry, Construction (structural timber, BSH/glulam), Landscaping (decking boards), Packaging industry (crates, pallets, boxes), Interior fitting/furniture construction, Private customers/DIY
- 01
Regional roundwood purchasing (ForstBW, forestry cooperatives, private)
- 02
Debarking and RVR-calibrated measurement (fixed lengths up to 5 m)
- 03
Sawing on the gang saw (EWD)
- 04
Sorting and automatic stacking (H.I.T.)
- 05
Technical timber drying / IPPC heat treatment
- 06
Planing, profiling, cutting to size
- 07
Stamping, blue-stain protection, impregnation
- 08
Order picking and collection
Wood Species & Processes
Spruce
Versatile softwood for construction and structural timber, interior fitting, exterior cladding and packaging materials.
Fir
Softwood for sawn timber and structural timber, sawn together with spruce.
Douglas fir
Durable wood for decking boards, substructures, exterior formwork as well as landscaping.
OSB boards 15/18/22 mm
Coarse particleboard for interior fitting, furniture construction and coverings.
Location

Großerlach-Mannenweiler
DESawmill and planing mill (headquarters, production and warehouse)
- Lot size
- Standard lengths 3/4/5 m, cut to customer dimensions
- Materials
- Spruce, fir, Douglas fir
- Gang saw (EWD, 2022)
- 3 Weinig planing machines (cross-sections up to 20x30 cm)
- Holtec package cross-cut saw
- OptiCut S 90 XL (Dimter)
- Edging saw H.I.T.
- Sorting and stacking system with 50 boxes (H.I.T.)
- Automatic main-product stacking (H.I.T.)
- Wiedemann debarking system
- 5 fresh-air/exhaust-air drying chambers (Mühlböck)
- Wolf roundwood sorting crane
- Wood-chip heating
- Burkhardt wood gasifier
Products



Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sawing (sawing roundwood into sawn timber)Machining | saw-rough | 14.50 m × 38 cm (sawing up to 38x38 cm) | – | – | Spruce, Fir, Douglas fir |
| Planing (two- and four-sided, with or without chamfer)Machining | – | 20 cm × 30 cm (cross-section 20x30 cm) | – | – | Spruce, Fir, Douglas fir |
| Producing tongue-and-groove profilesMachining | – | – | – | – | Spruce, Douglas fir |
| Planing ribbed profiles for decking boardsMachining | – | – | – | – | Douglas fir |
| Milling groovesMachining | – | – | – | – | Spruce, Douglas fir |
| Cutting & cross-cutting (package or single cross-cutting to exact length)Machining | accurate to the millimetre | – | – | – | Spruce, Fir, Douglas fir |
| Technical timber drying (fresh-air/exhaust-air drying chambers)Heat treatment | – | – | – | 5 chambers | Spruce, Fir, Douglas fir |
| IPPC heat treatment according to ISPM No. 15 (TÜV-monitored and registered)Heat treatment | – | – | – | – | Spruce, Fir, Douglas fir |
| Stamping (continuous stamping and printing on the narrow side)Surface | – | – | – | – | Spruce, Douglas fir |
| Blue-stain protection dippingSurface | – | – | – | – | Spruce, Fir, Douglas fir |
| Kiln pressure impregnation (green and brown, in cooperation with Nothdurft)Surface | – | – | – | – | Spruce, Fir, Douglas fir |
| Debarking of roundwoodMachining | – | 5 m (fixed lengths) | – | – | Spruce, Fir, Douglas fir |
| Finger-jointing (KVH finger-jointed to 13.00 m length)Joining | – | 13.00 m | – | – | Spruce, Fir, Douglas fir |
| Glulam / laminated timber production (BSH)Joining | – | – | – | – | Spruce, Fir, Douglas fir |
| Roundwood measurement (calibrated, approved according to RVR)Testing | – | 5 m | – | – | Spruce, Fir, Douglas fir |
| Automatic sorting of boards (by width and length, 50 boxes) and automatic stackingAssembly | – | – | – | – | Spruce, Fir, Douglas fir |
13 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Gang saw (headrig) | EWD | 1 | – | 2022 | Mannenweiler, Großerlach |
| Planing machine | Weinig | 3 | Cross-sections up to 20x30 cm | 2012 | Mannenweiler, Großerlach |
| Package cross-cut saw | Holtec | 1 | – | – | Mannenweiler, Großerlach |
| OptiCut cross-cut saw (semi-automatic, cutting to length accurate to the millimetre) | Dimter OptiCut S 90 XL | 1 | – | 2012 | Mannenweiler, Großerlach |
| Edging saw (saucer) | H.I.T. | 1 | – | 2016 | Mannenweiler, Großerlach |
| Sorting and stacking system (50 boxes, fully automatic) | H.I.T. | 1 | – | 2007 | Mannenweiler, Großerlach |
| Automatic main-product stacking (construction timber inspection) | H.I.T. | 1 | – | 2019 | Mannenweiler, Großerlach |
| Debarking system | Wiedemann | 1 | – | 2014 | Mannenweiler, Großerlach |
| Fresh-air/exhaust-air drying chamber | Mühlböck (newest chamber) | 5 | – | 2001-2023 | Mannenweiler, Großerlach |
| Roundwood sorting crane | Wolf | 1 | – | 1977 | Mannenweiler, Großerlach |
| Circular saw blades (expansion of the resaw) | – | 2 | – | 2023 | Mannenweiler, Großerlach |
| Wood-chip heating (for residual wood utilisation and operation of the drying chamber) | – | 1 | – | 2001 | Mannenweiler, Großerlach |
| Wood gasifier (pellets to wood gas for electricity and heat generation) | Burkhardt | 1 | – | 2018 | Mannenweiler, Großerlach |
Additional services
Quality & Certification
Timber drying takes place in fresh-air/exhaust-air chambers that are TÜV-monitored and registered for IPPC heat treatment according to ISPM No. 15. Roundwood measurement is calibrated and approved according to RVR; the wood comes from around 80 % PEFC-certified forests.
| Evidence | Großerlach-Mannenweiler |
|---|---|
| PEFC (sustainable forest management) | |
| IPPC/ISPM 15 heat treatment (TÜV-monitored) | |
| Energy-conscious company (ICG, SpaEfV Appendix 2) | |
| MH-MassivHolz manufacturer association |
Company History
- 1898
Carl Bay founds the sawmill as a supplement to the agricultural business; the operation runs with a locomobile (steam engine).
- 1905
Albert Bay joins the company and continues to run the sawmill.
- 1913
Albert Bay invests 150 marks in a gang saw from Maschinenfabrik Goede in Berlin.
- 1956
Conversion of the sawmill to electric drive.
- 1977
First roundwood sorting crane from Wolf replaces the excavator.
- 1984
Albrecht and Hermann Bay take over the company from their father Paul; modernisation and expansion.
- 1985
New construction of the planing hall with planing machine and storage racks.
- 1994
New construction of a warehouse with cantilever racks for dried goods.
- 2001
Commissioning of a fresh-air exhaust-air drying chamber and a wood-chip heating system for the company's own residual wood utilisation.
- 2007
Sorting and stacking system from H.I.T. with 50 boxes (automatic measurement by width and length).
- 2012
Construction of a 1,200 sqm warehouse; new Weinig planing machine (up to 20x30 cm) and OptiCut S 90 XL from Dimter.
- 2014
New debarking system from Wiedemann.
- 2015
Fire on 17 April in the wood-chip bunker destroys two drying chambers and the filter system.
- 2016
New edging saw from H.I.T.
- 2017
Commissioning of the sprinkler system in the sawmill and warehouse halls.
- 2018
Wood gasifier from Burkhardt goes into operation (wood gas from pellets for electricity and heat generation).
- 2019
Modernisation of construction timber inspection with automatic main-product stacking from H.I.T.
- 2021
New roundwood yard for fixed lengths up to 5 m with calibrated measurement approved according to RVR.
- 2022
Generational change: Matthias and Manuel Bay take over in the 5th generation; the saw is replaced with a brand-new saw from EWD.
- 2023
Expansion of the resaw with 2 circular saw blades, 125th anniversary and new drying chamber from Mühlböck (5 chambers in total).