ENERGETIC MODERNIZATION THROUGH OUR DEVELOPED REFURBISHMENT
Renovation / refurbishment of historic windows: Historic window constructions – especially box-type windows – are widespread throughout the German-speaking world and beyond and have been considered tried and tested constructions for more than 200 years. Their good usage and functional properties as well as their high aesthetic value speak for their preservation.
As a traditional Berlin window construction company, Hans Timm Fensterbau offers the renovation / refurbishment (window renovation / window refurbishment) of single, composite and box-type window constructions in accordance with the holistic principle.
In a two-year research project – supported by the Berlin Senate, monument protection authorities and the European Union – we developed the necessary work steps for the complete refurbishment/renovation of historic box-type windows in 2000 and presented them in the
V
FF-Guideline HO.09
published by the Window and Façade Association, which today
today one of the recognized rules of
of technology throughout Germany.
Thanks to our many years of expertise, our comprehensive refurbishment leads to a considerable improvement in the thermal, sound and weather protection of your window constructions from the period of construction by effectively eliminating historical weak points.
Our refurbishment is carried out with a focus on sustainable low-tech principles and results in a holistic refurbishment with significant functional improvements. As a result, your box-type windows are optimally adapted to the requirements of today’s use and are given a new life cycle.
All in all, retreading is an investment that pays off in the short term. It leads to considerable savings in heating energy costs and increases comfort through improved tightness and sound insulation. The functional and functional properties as well as the high aesthetic value of the historic windows are fully retained.
| Stock | Retreaded | |
|---|---|---|
| Thermal insulation U-value [W/m²K] | 2,5 – 3,0 | 1,3 – 0,9 |
| Sound insulation Rw [dB] acc. DIN 4109 | approx. 34 | 46 |
| Air permeability class | 1 | 3 |
Put your trust in the inventor of rebated box windows
Through a research project – supported by the Berlin Senate and the European Union – we developed the necessary work steps for the renovation / refurbishment (window renovation / window refurbishment) of box-type windows in 2000 and wrote them down in the VFF guideline HO.09, which is now one of the recognized rules of technology throughout Germany.
In 2014, we revised the guidelines – after more than a decade of experience with retreading – in the working group of the technical committee of the Window and Façade Association.
Our work is also based on the
specifications of the monument conservationists
in order to preserve the historical building substance in the best possible and professional way.
TIMM Fensterbau specializes in holistic window refurbishment
The renovation / refurbishment (window renovation / window refurbishment) of box-type windows is a complex process involving several trades (carpenters, painters, glaziers, plumbers). We therefore take a holistic approach. As a specialized window construction company, TIMM offers you all the necessary work across all trades for an upcoming box-type window renovation / retreading.
In contrast, individual renovation measures separated by trade (so-called brush renovations) usually only lead to a short-term visual improvement of the windows, as the “weak points” of the historical construction and thus the causes of damage are not eliminated.
You can therefore rely on our many years of experience and the processing in our Plant 1, which is specially equipped for refurbishment/retreading and has specially trained personnel. Our impressive list of references speaks for our work.
TIMM’s awards in recognition of our listed windows
Both our passion for historic windows and our love of detail, as well as our commitment to finding individual and creative solutions for listed buildings, are reflected in various awards:
- Federal Prize for Craftsmanship in Monument Conservation 2004 and 2009
- Hans Timm was awarded the Medal of Merit of the Order of Merit of the Federal Republic of Germany in 2004 and 2010 for his services to the preservation of historical monuments.
- In recognition of ecologically responsible entrepreneurial action and the associated contribution to environmental and climate protection, TIMM Fensterbau is presented with the Green Buddy Award for the “retreading” product in 2013.
- In 2014, Hans Timm was awarded the Ferdinand von Quast Medal, the Berlin Monument Preservation Prize, for special services to monument preservation.
- In 2017, Hans Timm is awarded the Berlin Energy Saving Champion for his efforts to renovate historic box-type double windows.
Photo: Hiepler, Brunier
TIMMS RENOVATION / REFURBISHMENT (REFURBISHMENT) OF HISTORIC WINDOWS
THE PROFESSIONAL AND SERVICEABLE REFURBISHMENT CONSISTS OF THE FOLLOWING PARTS:
Carpentry overhaul of the window constructions
One of the core work steps in the refurbishment/renovation (window refurbishment/window refurbishment) is a carpentry overhaul of the blind and sash frames . In particular:
- Open parapet joints and wood cracks closed by carpenters
- Corner joints reattached
- Damaged and no longer repairable weatherboards replaced.
Special new paint structure for durability
A 100% paint stripping and color recoating of all wooden parts is required. The sashes are processed in our factory during renovation / refurbishment (window renovation / window refurbishment), the frames on site. We carry out 100% paint stripping exclusively using the hot air process. This is because chemical paint stripping causes damage to the window and is rejected by us. All untreated wood is impregnated with solvent-based primers during the renovation of the box-type windows on site using the brush method and twice in the factory using the immersion method. A color coating is then applied in accordance with the technical requirements of the VFF-HO.09 guidelines.
New glazing for improved thermal insulation
To improve energy efficiency, the inner sashes will be modernized with thin insulating glazing in line with listed building requirements. This creates the possibility of a significant energy improvement to 1.5 to 0.9 W/m²K (previously UW value 3.0 W/m²K).
Ensuring suitability for use and moisture protection
The brittle, cracked putties with partially insufficient adhesion are completely renewed. The glazing rebates are repainted and the new glazing is sealed with elastic, improved sealant so that moisture protection is once again guaranteed.
Reworking the historical fittings
As part of the retreading process, the historical fittings are refurbished by us using special processes. The old olives are polished. Furthermore, the The hinges are realigned and the fittings readjusted so that the historic windows can be operated and closed again. If necessary, historical fittings are replaced.
Improvement of driving rain tightness
To improve the driving rain tightness – one of the historical weak points of the constructions – the box-type window is given a revised stepped rebate on the lower section, including a water nose developed by us in research projects.
Improved tightness and increased sound insulation
As a measure to improve tightness, thermal and sound insulation, a circumferential seal is fitted to the inner sash. This also significantly improves the susceptibility to condensation on the inside of the outer pane.
Procedure – Individually adapted to your property
The refurbishment (window renovation / window refurbishment) of box-type windows can be carried out in two different processing sequences. As a rule, the sashes are completely refurbished in the factory and the frames are refurbished on site. However, the box-type windows can optionally be refurbished by completely removing the building elements and completely refurbishing them in the factory.
Support program
As a qualified specialist company, the refurbishment we offer is eligible for the nationwide funding program “
BEG EM – 5.1 Individual measure on the building envelope
” with a current subsidy of 15%.
Please note!
The application requires the involvement of an energy efficiency expert (EEE). We will be happy to assist you in your search for the right energy efficiency expert.
STEPS OF THE RETREADING PROCESS
ACCORDING TO GUIDELINE HO.09 AND FOR QUALITY ASSURANCE
01
Holistic revision of a box-type double window
02
De-glazing of the sashes in the factory and removal of the existing fittings
03
Re-milling the glass rebates after devitrification
04
100% paint stripping using the hot air process
05
Reconditioning or replacing wooden parts that are not intact
06
Reattaching the corner brackets to stabilize the corner joint
07
Closing open parapet joints and cracks in the wood
08
Milling the seal on the inner sash
09
Installing the driving rain seal on the frame on site
10
New coating in the factory by spraying
11
New glazing and sealing with elastic sealant
12
Reworking and cleaning the fittings
Consulting – Retreading
We will be happy to advise you and provide you with further information:
- Coordination of appointments for the preparation of quotations
- Procedure and advantages of retreading
- Guide price information
- Tender texts
REFERENCES
Wohnhaus Hoch 6
Wohnhaus Pasteurstraße
Hotel am Oranienplatz
Sportschule im Olympiapark – Poelchau-Schule
Olympiapark Berlin – Große Turnhalle
Villa Dahlem
Korkenzieher Haus
Aletto Hotel - Vitra
Wohnhaus Taubert
Villa Wandlitz
Herbert Wehner Haus
Remise Immanuelkirchstrasse
Wohnhaus The Yard
Dachaufstockung Weser-Weichsel-Strasse
Geschäftshaus Greifswalderstrasse
Dachaufstockung Immanuelkrichstrasse
Villa K
Villa Erxleben
Haus Buchthal
Villa B
Bundesministerium für Gesundheit
Wohnhaus Geisberg
Villa I
Thomas-Mann-Haus
DSTRCT. BERLIN. Alter Schlachthof
Wohnhaus TOPAZ Gaillardstraße
Max-Taut-Schule
Bundesministerium für Familie, Senioren, Frauen und Jugend
Das Stue Hotel
Das Soho House Berlin
Staatsbibliothek Unter den Linden
Uhrenmanufaktur A. Lange & Söhne
Bundesministerium für Umwelt, Naturschutz, nukleare Sicherheit und Verbraucherschutz
Bundesministerium für Ernährung und Landwirtschaft
Villa Q
Spore Initiative
SHOWROOM
The most innovative solutions in the industry
On around 850 m² of exhibition space in our showroom, we present the latest and most innovative solutions in the industry from the areas of aluminum windows, wooden windows, wood-aluminum windows and steel windows as well as security windows and facades on over 60 exhibits.
We offer architects, builders and partners in the contract business the opportunity to experience all types and design languages of windows and façades and to be inspired by our versatile product portfolio. We cordially invite you to use this world of experience for your building projects and planning.
Note: Please visit us after making an appointment with us in advance, as our showroom is not designed for the general public and spontaneous visits.
WHERE TO FIND US
TIMM CONTACT
Hans Timm Fensterbau GmbH & Co KGMotzener Str. 10
D-12277 Berlin
Consultation & quotation requests:
anfrage@timm-fensterbau.de
+49 30 720 831-70
service@timm-fensterbau.de
+49 30 720 831-60 Head office:
info@timm-fensterbau.de
+49 30 720 831-0
