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The "New" Clapboard Approach |
When it comes to repainting an old house, specifically one older than 100 years, there are several approaches:
Grind
all the old paint off – Time consuming, damages the old clapboards and
raises the “lead paint dust” issue.
Not to mention a mess.
Chemical
Strippers
– Costly and again, time consuming.
After the paint has been stripped, the clapboards must
be treated with a
chemical wash to remove all old strippers, and power washed several times.
Disposal of the
chemical waste and old paint is a problem. Power washing an old house can
cause moisture to leak inside, causing
interior problems (i.e. damaged plaster, woodwork, etc.)
New
Clapboards & Tyvek – This approach, while deemed “extreme” by
some contractors and painters, is the
proven method Renaissance Restorations has
been using on all restorations. The
analogy for removing old
clapboards and replacing with new is:
“If
your skin was 100+ years old, it would need replacing”
The problem with
old clapboarding is moisture from the interior of the house causes warping and
decay
of the old clapboards. The rosin paper
often used underneath old clapboards also holds this moisture and causes rot and
insect problems. And
can lead to peeling of paint. Most old
clapboarding has no primer on the back side, allowing moisture
to pass through the wood, causing paint to peel.
The
western cedar clapboarding that Renaissance Restorations installs is pre-primed
on both sides to prevent
warping from moisture and provide a good base for painting.
Below are photos of
old clapboarding and new clapboarding. New
clapboarding is on top, old on bottom of each photo.
The difference is clearly
shown:
Front Side Reverse Side


The Clapboarding replacement process used by Renaissance Restorations includes:
- Removal of all old clapboards, tarpaper / rosin paper
-
Repair of any damaged sheathing
- Layer of Dupont Tyvek®
- Sealing of all seams and joints with Tyvek®
Tape, including window frames
- Installation of new Western Red Cedar clapboards, pre-primed on both sides.
All joints are cut with "scarf" type
joints to hide edges,
nail holes filled with wood putty and sanded / primed. All clapboards are
installed with a
4" exposure or reveal. Stainless steel ring shank siding nails
are used to fasten the clapboards.
- Coat of Kilz®
primer, followed by 2 coats of final paint
This detailed and professional approach to workmanship is the philosophy that
Renaissance Restorations uses
in work done by
the firm.

Example
of a Clapboarding Project:
The Nahum Harwood Residence, Leominster, MA
Replacement
of Original Clapboards
The original clapboards after the effects of
120 years of exposure to the elements, and numerous paintings,
were in need of replacement. Rather than scrape, sand and repaint the
old clapboards,
all old clapboarding and tarpaper were removed.
Any damaged sheathing was replaced. Blown in insulation was also done
to improve the
energy efficiency of the residence. Damaged trim and molding were
replaced using available
materials and custom made work. Window frames were caulked, and Tyvek house wrap
was applied,
prior to new clapboards being installed to insure a good weatherproof
seal.
Cedar clapboards, primed on both sides were installed.
A final paint of BEHR® Hi Gloss paint in the "Othello" color
scheme was applied.
Original
Siding

TYVEK House Wrap Installed
New Primed Cedar Siding Installed

Completed
Section of Siding Work

