Welcome to the Piano World Piano Forums
Over 2.5 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
Piano Forums & Piano World
What's Hot!!
Posting Pictures on the Forums
-------------------
Forums RULES & HELP
-------------------
ADVERTISE on Piano World
(125ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
(ad)
Piano Buyer Guide
Piano Buyer Fall 2017
Who's Online Now
106 registered members (anamnesis, Almaviva, B.Augmented, BachToTheFuture, 30 invisible), 1,820 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Quick Links to Useful Piano & Music Resources
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers

Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano & Music Accessories
*Live Piano Venues
*Music School Listings
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Directory/Site Map
*Virtual Piano
*Music Word Search
*Piano Videos
*Virtual Piano Chords & Scales
Previous Thread
Next Thread
Print Thread
#1949575 - 08/26/12 09:01 PM Humidity from leaking roof  
Joined: Sep 2011
Posts: 38
K-52SM Offline
Full Member
K-52SM  Offline
Full Member

Joined: Sep 2011
Posts: 38
My house has recently developed a roofleak. Living here in the deep south the humidity is high to begin with. We have had a lot or rain over the past two weeks so you can feel the rise in humidity in my home as the tempratures soars into the mid to upper 90%'s. I am working to solve the leak problem. I just purchased a slighly used Vogel Piano and it was delivered about a week ago. It has developed a lot of notes that won't play unless repeatedly struck and has gone badly out of tune. Do you think that theres been any damage done to the piano?? if not, what do you think it will take to fix the notes and what will is cost me?

Tommy

(ad 800)
PTG Journal
PTG Journal
#1949587 - 08/26/12 09:42 PM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Jun 2003
Posts: 25,535
BDB Offline
Yikes! 10000 Post Club Member
BDB  Offline
Yikes! 10000 Post Club Member

Joined: Jun 2003
Posts: 25,535
Oakland
You need to call a piano technician. We cannot tell what is wrong with the piano over the internet, and we cannot set prices for others even if we could diagnose your problems.


Semipro Tech
#1949819 - 08/27/12 12:09 PM Re: Humidity from leaking roof [Re: BDB]  
Joined: Jun 2011
Posts: 534
TunerJeff Offline
500 Post Club Member
TunerJeff  Offline
500 Post Club Member

Joined: Jun 2011
Posts: 534
Oregon Coast
Tommy!

You need to get the roof fixed, and you need to get the piano into a drier place...even if it means moving it out of your house until you get that roof fixed. Seriously.

All the interior parts of the action, from the keys to the hammers are unfinished woods. There is no lacquer or finish on the parts. This means the pores of the wood are OPEN and quite willing to accept moisture from the room. The parts swell as the moisture builds, and the piano stops working. Every moving part of the piano is based on a tiny piece of cloth and a pin driven through; these cloth bushings, from the hammers to the whippens, jacks, and even the damper-levers, can swell with humidity and lock-up completely on the pins. It stops working, or works sluggishly in high humidity.

The large panel that is the soundboard is finished, but only with a thin layer. It too will respond fairly quickly to humidity levels in the house. When it swells or expands with moisture it will radically change the sound of the tuning.

None of the tuners on this list can tell you more than; 'Get it dry!' at this time. Suggestions for humidity control systems and the like are meaningless until you get this stabilized in your home. None of us can tell you what it may cost to 'fix'.

If you are lucky, it will be just fine once you get it dry, or at least drier! The Vogel is a nice instrument and deserves a little respect...get it out of there, my friend!


Jeffrey T. Hickey, RPT
Oregon Coast Piano Services
TunerJeff440@aol.com
#1949877 - 08/27/12 02:04 PM Re: Humidity from leaking roof [Re: TunerJeff]  
Joined: Nov 2010
Posts: 5,253
ando Offline
5000 Post Club Member
ando  Offline
5000 Post Club Member

Joined: Nov 2010
Posts: 5,253
Melbourne, Australia
Originally Posted by TunerJeff


All the interior parts of the action, from the keys to the hammers are unfinished woods. There is no lacquer or finish on the parts.


Just a question on this: why is it that piano makers never chose to seal these parts? It seems like it might have been possible to dip many parts in a sealer to reduce the effect of humidity. Maybe you'd have to drill holes after this treatment, but surely having a lot less of the wood exposed to variable conditions would give it more dimensional stability. What do you techs think is the reason for this?

(ad)
Piano & Music Accessories
piano accessories music gifts tuning and moving equipment
#1949879 - 08/27/12 02:05 PM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Sep 2011
Posts: 38
K-52SM Offline
Full Member
K-52SM  Offline
Full Member

Joined: Sep 2011
Posts: 38
TunerJeff

I have someone coming to deal with the roof on thursday. the piano has gone considerbly out of tune. I am trying to have the local Piano store to come get the Piano tommoroe. Hope no serious damage has been done. Thank-you very much for your knowlegable and kind reply

#1949899 - 08/27/12 02:36 PM Re: Humidity from leaking roof [Re: ando]  
Joined: Mar 2008
Posts: 4,263
Silverwood Pianos Offline
4000 Post Club Member
Silverwood Pianos  Offline
4000 Post Club Member

Joined: Mar 2008
Posts: 4,263
Vancouver B. C. Canada
Originally Posted by ando

Just a question on this: why is it that piano makers never chose to seal these parts? It seems like it might have been possible to dip many parts in a sealer to reduce the effect of humidity. Maybe you'd have to drill holes after this treatment, but surely having a lot less of the wood exposed to variable conditions would give it more dimensional stability. What do you techs think is the reason for this?



There is no sealer that will mitigate the effects of humidity on wood. If there was such a discovery it would have been used on sounding boards long ago.

Even sealed wood is subject to the expansion and contraction due to humidity retention or loss.


Dan Silverwood
www.silverwoodpianos.com
http://silverwoodpianos.blogspot.com/
http://www.facebook.com/SilverwoodPianosDotCom
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur."
#1950132 - 08/27/12 11:45 PM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Apr 2008
Posts: 2,481
Emmery Offline
2000 Post Club Member
Emmery  Offline
2000 Post Club Member

Joined: Apr 2008
Posts: 2,481
Niagara Region, On. Canada
The material finish would have to be a "vapor barrier" to work. No such material exists; even in construction what is often refered to as a vapour barrier is in fact a vapour diffusion/retarder by strict definition.

The ability of a material to retard the diffusion of water vapor is measured by units known as "perms" or permeability. A perm at 73.4°F (23°C) is a measure of the number of grains of water vapor passing through a square foot of material per hour at a differential vapor pressure equal to one inch of mercury or, 1" W.C. Any material with a perm rating of less than 1.0 is considered a vapor retarder.

Some finishes do come under this amount, but they just slow the process...not eliminate it. They also need to remain thin, and allow the soundboard to freely vibrate. The best vapor diffusers are fairly thick and would deaden the sound.

Last edited by Emmery; 08/27/12 11:46 PM.

Piano Technician
George Brown College /85
Niagara Region
#1950145 - 08/28/12 12:09 AM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Jun 2011
Posts: 2,127
Maximillyan Offline
2000 Post Club Member
Maximillyan  Offline
2000 Post Club Member

Joined: Jun 2011
Posts: 2,127
KZ
K-52SM, maybe until you have repaired the roof of your home temporarily set more absorbing materials a piano's place in the room. Such as foam, river sand, wood sawdust etc

#1950151 - 08/28/12 12:16 AM Re: Humidity from leaking roof [Re: ando]  
Joined: Jun 2011
Posts: 2,127
Maximillyan Offline
2000 Post Club Member
Maximillyan  Offline
2000 Post Club Member

Joined: Jun 2011
Posts: 2,127
KZ
Originally Posted by ando
Originally Posted by TunerJeff


All the interior parts of the action, from the keys to the hammers are unfinished woods. There is no lacquer or finish on the parts.


It seems like it might have been possible to dip many parts in a sealer to reduce the effect of humidity.

Piano manufacturer knowingly fails to do it to possible to reduce the price its products

#1950159 - 08/28/12 12:35 AM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Jun 2003
Posts: 25,535
BDB Offline
Yikes! 10000 Post Club Member
BDB  Offline
Yikes! 10000 Post Club Member

Joined: Jun 2003
Posts: 25,535
Oakland
If it is so bad that there is danger of permanent damage, you should call a damage control specialty company. Your insurance company can recommend one and will probably pay for it.


Semipro Tech
#1950164 - 08/28/12 12:48 AM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Nov 2010
Posts: 5,253
ando Offline
5000 Post Club Member
ando  Offline
5000 Post Club Member

Joined: Nov 2010
Posts: 5,253
Melbourne, Australia
Thanks Dan and Emmery for your explanation about "sealers". I would assume that if the seal wasn't 100% it would be even worse than no sealer because there would be a significant lag effect. ie moisture trapped within parts would take a long time to be released. I guess that's why carbon fibre actions were developed.

Cheers.

#1950168 - 08/28/12 12:53 AM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Jun 2011
Posts: 2,127
Maximillyan Offline
2000 Post Club Member
Maximillyan  Offline
2000 Post Club Member

Joined: Jun 2011
Posts: 2,127
KZ
Constant room ventilation is also a way to deal with dampness

#1950314 - 08/28/12 09:35 AM Re: Humidity from leaking roof [Re: K-52SM]  
Joined: Oct 2008
Posts: 4,785
Jeff Clef Offline
4000 Post Club Member
Jeff Clef  Offline
4000 Post Club Member

Joined: Oct 2008
Posts: 4,785
San Jose, CA
"...It has developed a lot of notes that won't play unless repeatedly struck and has gone badly out of tune...."

Ow!

Pianos often go out of tune after they are moved, and sometimes have a sticky key or two (more commonly, new ones). But 90% RH is really bad news, and you should do something, fast. Is it possible to move the piano to a room without a leak, just for now, or to put a dehumidifier in the room to bring it down off the ceiling? Or both.

Try to aim for a steady room humidity of 45-55%, if you can, summer and winter. I grew up in the Deep South (with a piano) and this 100% August humidity is very familiar. Setting aside the dangers of mold and mildew (but of course, we can't), it's the big swings in environmental conditions that are hard on pianos. So try to keep it as steady as you can, and it will do better.


Clef

#1950865 - 08/29/12 10:17 AM Re: Humidity from leaking roof [Re: ando]  
Joined: Apr 2008
Posts: 2,481
Emmery Offline
2000 Post Club Member
Emmery  Offline
2000 Post Club Member

Joined: Apr 2008
Posts: 2,481
Niagara Region, On. Canada
Originally Posted by ando
Thanks Dan and Emmery for your explanation about "sealers". I would assume that if the seal wasn't 100% it would be even worse than no sealer because there would be a significant lag effect. ie moisture trapped within parts would take a long time to be released. I guess that's why carbon fibre actions were developed.

Cheers.


Action parts have typically been left unsealed because areas of contact will wear off the sealer. Being partially sealed in areas and not in others would cause warpage.

I've read somewhere once that the end grain absorbs and releases far more moisture than anywhere else on wood. Perhaps if improvement can be made, it would be in this endgrain area that is contained within the pianos' structure.


Piano Technician
George Brown College /85
Niagara Region

Moderated by  Piano World 

Piano Acc. & Gift Items in
Piano World's Online Store
In PianoSupplies.com ,(a division of Piano World)
our online store for piano and music gifts and accessories, Digital Piano Dolly, party goods, tuning equipment, piano moving equipment, benches, lamps Caster Cups and more.


Free Shipping* on Jansen Artist Piano Benches, Cocoweb Piano Lamps, Hidrau Hydraulic Piano Benches
(*free shipping within contiguous U.S. only)
(ad)
Pearl River & Ritmuller
Pearl River Pianos
(ad)
Pianoteq
PianoTeq 6 Out now
ad
Pierce Piano Atlas


New Topics - Multiple Forums
Pianoteq 6 Recording Function Glitch
by newbert. 11/18/17 04:10 PM
collapsing pinky
by Muove. 11/18/17 02:22 PM
DP-10X built in speakers for Pianoteq?
by Tim1981. 11/18/17 12:16 PM
Kawai K3 damper felts for "F" look different
by Crow Wing. 11/18/17 10:09 AM
Scarlatti Sonata B minor k 27 pedal
by Potlea. 11/18/17 05:46 AM
Forum Statistics
Forums44
Topics182,829
Posts2,672,772
Members89,157
Most Online15,252
Mar 21st, 2010
(ad)
Accu-Tuner
Sanderson Accu-Tuner
Check It Out!
There's a lot more to Piano World than just the forums.
Click Here to
Explore The Rest of Piano World!!
Visit our online store for gifts for music lovers


 
Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter |


copyright 1997 - 2017 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission
Powered by UBB.threads™ PHP Forum Software 7.6.0