
System solutions for building waterproofing, masonry renovation and impact sound insulation from Landsberg am Lech.

btf - Innovationen für den Bau GmbH
Landsberg am Lech, Fahrenheitstraße 3New on Amplifa
About btf - Innovationen für den Bau
btf - Innovationen für den Bau GmbH is an owner-managed mid-sized company based in Landsberg am Lech. The company develops and distributes construction products for waterproofing and sound insulation – as a private-label supplier and wholesale distributor under the btf brand. The product range includes system solutions for roof, floor, basement and wall: damp-proof and masonry barrier courses to DIN 18533 (including W1-E to W4-E), building waterproofing membranes, butyl sealing tapes, flat-roof vapour barriers made of aluminium composite membranes, the MAUERFIX renovation fleece for capillary decoupling of salt-contaminated masonry, and impact sound insulation to DIN 18560 and DIN 4109. Materials used include PVC, polymer bitumen, butyl rubber (PIB), polyester fleeces, HDPE and aluminium composite membranes. Customers are building materials merchants, processing companies and specialist planners in German-speaking countries; in addition, btf offers a technical field service and a network of specialised dealers.
- Site
- Landsberg am Lech
- Processes
- Masonry barrier / horizontal damp-proof course (masonry barrier membranes, cross-section, Building waterproofing (W1-E, W2-E, W3-E, W4-E to DIN 18533), Masonry renovation (renovation fleece / capillary decoupling, injection), Impact sound insulation (Flüstermatte 4 mm / 8 mm, under screed and under concrete stone steps), Flat-roof vapour barrier / aluminium composite membranes (roof vapour barriers, sealing tapes), Butyl sealing tape processing (joint sealing, crack renovation, seam sealing), Private-label supplier, Wholesale
- Materials
- Polyester (PES), Butyl rubber (PIB) / polyisobutylene, Polymer bitumen, Aluminium (aluminium composite membrane), PVC, HDPE carrier film, PET-aluminium-PET composite, Acrylate (injection gel, 2-component)
- Certificates
- General building approval (PROCELL F+M), Emission-tested to GEV criteria, Test certificates MPA BS / ibac / ALAB / ISFT
- Founded
- 1993
- Industries
- Building construction, Construction trades/processing companies, Building materials trade, Specialist planning/architecture
- 01
Product development (own products and patents)
- 02
Private-label distribution
- 03
Wholesale via building materials trade
- 04
Specialised dealer network
- 05
Technical field service and application support
Materials and product systems
Polyester (PES fleece)
3D-structured plaster carrier material for capillary decoupling in the MAUERFIX system (440 g/m², 7 mm).
Butyl rubber / polyisobutylene
Base material for sealing tapes, round cords and seam seals in building and flat-roof waterproofing.
PVC / PVC foam
Material of damp-proof membranes and the three-layer masonry barrier membrane PROCELL F+M with fabric insert.
Polymer bitumen
Sealing compound in building waterproofing membranes and aluminium composite membranes for roof and plinth.
Aluminium (aluminium composite membrane)
Carrier material for vapour barriers, sealing tapes and connection strips in flat-roof and floor applications.
HDPE carrier film / PET-aluminium-PET composite
Carrier layers of the building waterproofing membrane FUTHENE WATERSTOP and FUTHENE AL.
Alkali-resistant glass fibre fabric
Reinforcing fabric (3 × 3 mm) in the MAUERFIX system for absorbing tensile and shear stresses.
Locations

Landsberg am Lech
DECompany headquarters, product development and sales
Products





Inside the production










Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Masonry barrier / horizontal damp-proof course (masonry barrier membranes, cross-section | – | 50 lfm per roll × 0.75 m | – | 1 roll – 168 rolls per pallet | PVC foam (three-layer, with fabric insert), Aluminium composite membrane with spun-bonded fleece, Bitumen |
| Building waterproofing (W1-E, W2-E, W3-E, W4-E to DIN 18533) | – | 15 lfm × 1.00 m | – | – | Polymer bitumen, HDPE carrier film with butyl rubber layer, PET-aluminium-PET composite with special butyl |
| Masonry renovation (renovation fleece / capillary decoupling, injection) | 7.0 mm ± 2.0 mm | 10 lfm × 1.00 m | 440 g/m² | 1 roll – 10 rolls per pallet | 100 % polyester (PES fleece, 3D-structured), silane-based injection agent (injection cream), cement-based adhesive and reinforcing mortar |
| Impact sound insulation (Flüstermatte 4 mm / 8 mm, under screed and under concrete stone steps) | – | – | – | – | Special polyester fleece |
| Flat-roof vapour barrier / aluminium composite membranes (roof vapour barriers, sealing tapes) | – | – | – | – | Aluminium composite membrane with bitumen, Aluminium composite membrane with plastic adhesive |
| Butyl sealing tape processing (joint sealing, crack renovation, seam sealing) | – | 15 lfm × 0.25 m | – | 1 carton | Butyl rubber (PIB), Polyisobutylene, Fleece-coated carrier material |
Additional services
Quality and test certificates
Products are tested to DIN 18533 (W1-E to W4-E), DIN EN 14909 and DIN EN 13967; among others, a general building approval, emission tests to GEV criteria and test reports from MPA BS, ibac RWTH Aachen, ALAB and ISFT are available.
| Evidence | Landsberg am Lech |
|---|---|
| General building approval (PROCELL F+M) | |
| Emission-tested to GEV criteria | |
| Test certificates MPA BS / ibac / ALAB / ISFT |
Company history
- 1993
Founded by Franz Turtenwald in Bayreuth; distribution of sanitary and screed products
- 1995
Rüdiger Turtenwald joins the company; strategic focus on PVC damp-proof membranes
- 2001
Development of own products and patents for floor, wall and roof
- 2016
Relocation to the new industrial estate in Landsberg am Lech
- 2022
Dominik Turtenwald joins the management