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Caulking Secrets From a Pro
Caulking Secrets From a Pro
Published: 2013/09/13
Channel: enduringcharm
How to Caulk Like a Pro
How to Caulk Like a Pro
Published: 2016/09/08
Channel: LRN2DIY
How to Caulk a Bathtub with Beautiful Results
How to Caulk a Bathtub with Beautiful Results
Published: 2013/06/03
Channel: seejanedrill
Basic Caulking Tips & Tricks  - How to
Basic Caulking Tips & Tricks - How to
Published: 2015/05/10
Channel: Repairs101
Remove & replace moldy shower caulk
Remove & replace moldy shower caulk
Published: 2012/12/06
Channel: iScaper1
Tips on Caulking Wide Gaps : Home Sweet Home Repair
Tips on Caulking Wide Gaps : Home Sweet Home Repair
Published: 2013/07/11
Channel: ehowathomechannel
THE BEST CAULKING TO USE?  Best caulking 2016 caulking hacks
THE BEST CAULKING TO USE? Best caulking 2016 caulking hacks
Published: 2016/11/06
Channel: Home Improvement How To's
CAULKING AND SPACKLING TIPS.  DIY How to paint trim.  Tips painting trim work.
CAULKING AND SPACKLING TIPS. DIY How to paint trim. Tips painting trim work.
Published: 2016/11/23
Channel: Home Improvement How To's
How to Caulk | House Painting
How to Caulk | House Painting
Published: 2013/11/18
Channel: Howcast
How to master the caulk
How to master the caulk
Published: 2017/02/18
Channel: Chelcie Lynn
How To Caulk Tips - Two EXCELLENT tips on how to caulk that will make caulking easier.
How To Caulk Tips - Two EXCELLENT tips on how to caulk that will make caulking easier.
Published: 2012/06/30
Channel: howtopaintinfo
3 Caulking Tips for Excellent Results
3 Caulking Tips for Excellent Results
Published: 2017/03/30
Channel: LRN2DIY
how to caulk a concrete isolation joint music
how to caulk a concrete isolation joint music
Published: 2014/09/21
Channel: Mike Day
Commercial Building Waterproof Caulking
Commercial Building Waterproof Caulking
Published: 2010/04/21
Channel: Presto Restoration Products
how to open a tube of caulk
how to open a tube of caulk
Published: 2016/12/21
Channel: doityourselfwithjoe
How to Replace Moldy Caulk in a  Bathtub or Shower
How to Replace Moldy Caulk in a Bathtub or Shower
Published: 2014/07/18
Channel: KenTraining
Professional Caulker Caulking Tools
Professional Caulker Caulking Tools
Published: 2012/02/09
Channel: caulkerman1
How To Caulk. THE CAULKING SECRET REVEALED!
How To Caulk. THE CAULKING SECRET REVEALED!
Published: 2010/05/07
Channel: shaneconlan1
Caulking made easy
Caulking made easy
Published: 2017/03/21
Channel: Doza Painting
Quikrete cement caulking and other Quikrete stucco products
Quikrete cement caulking and other Quikrete stucco products
Published: 2015/11/02
Channel: Kirk Giordano plastering Inc.
How to Apply a Perfect Silicone Bead of Caulk
How to Apply a Perfect Silicone Bead of Caulk
Published: 2012/02/25
Channel: Corvus Construction
How To Use A Caulk Gun and a Secret
How To Use A Caulk Gun and a Secret
Published: 2010/03/08
Channel: TheRealTimJones
Best way to Caulk with silicone - Easy and no mess !!
Best way to Caulk with silicone - Easy and no mess !!
Published: 2013/01/17
Channel: howtodiyright
How to Apply Exterior Caulking
How to Apply Exterior Caulking
Published: 2013/06/19
Channel: Canadian Tire
How To Install Caulk On A Kitchen Tile Backsplash
How To Install Caulk On A Kitchen Tile Backsplash
Published: 2014/03/08
Channel: iCreatables
Caulking Baseboard
Caulking Baseboard
Published: 2012/11/13
Channel: PaintSourceNetwork
How to apply exterior caulking properly...
How to apply exterior caulking properly...
Published: 2016/10/26
Channel: www.NFSB.me (Continuing Education - New Frontiers School Board)
Paint (Caulking) Tips/Tricks/Secrets
Paint (Caulking) Tips/Tricks/Secrets
Published: 2011/11/29
Channel: Cpcsof1
How To Apply Caulking Like A Pro
How To Apply Caulking Like A Pro
Published: 2013/10/24
Channel: Austin DenHerder
Exterior Painting Step 3: Caulking the House
Exterior Painting Step 3: Caulking the House
Published: 2013/07/17
Channel: howtopaintahouse
Caulk Tools - Caulk Finishing Tool Kit - Life Changing Products
Caulk Tools - Caulk Finishing Tool Kit - Life Changing Products
Published: 2017/04/06
Channel: Life Changing Products
Caulking Your Windows - Things Even a Monkey Should Know
Caulking Your Windows - Things Even a Monkey Should Know
Published: 2011/11/28
Channel: MonkeysKnow
How to Caulk Windows For Dummies
How to Caulk Windows For Dummies
Published: 2009/05/21
Channel: fordummies
Riveted joint (caulking and fullering) ,part-2 ,MD1
Riveted joint (caulking and fullering) ,part-2 ,MD1
Published: 2017/08/21
Channel: Enotes by Ashish singh
Installing baseboard: caulking an inside corner
Installing baseboard: caulking an inside corner
Published: 2010/08/02
Channel: VideoJoeKnows
How To Remove and Replace Caulk in a Bathtub
How To Remove and Replace Caulk in a Bathtub
Published: 2015/04/06
Channel: eztv online
ColorFast Tile and Grout Caulking
ColorFast Tile and Grout Caulking
Published: 2015/03/16
Channel: Colorfast Ind
How to Caulk a Tub - Ace Hardware
How to Caulk a Tub - Ace Hardware
Published: 2009/10/13
Channel: Ace Hardware
Caulking As an Alternative Method for Finishing Drywall Corners
Caulking As an Alternative Method for Finishing Drywall Corners
Published: 2014/03/28
Channel: gregvancom
How to caulk around the bathtub
How to caulk around the bathtub
Published: 2015/02/27
Channel: Ride Or Die USI
Filling a hole with caulking
Filling a hole with caulking
Published: 2010/07/03
Channel: VideoJoeKnows
How to Caulking Tips and Secrets Best Dripless Caulking Gun
How to Caulking Tips and Secrets Best Dripless Caulking Gun
Published: 2017/03/11
Channel: Flannel Guy DIY
How to Choose Caulking for Sealing the Exterior of Your Home
How to Choose Caulking for Sealing the Exterior of Your Home
Published: 2012/02/02
Channel: Today's Homeowner with Danny Lipford
How To Re-Caulk Your Bath Tub Or Shower
How To Re-Caulk Your Bath Tub Or Shower
Published: 2014/01/17
Channel: Helpful DIY
Caulking Zip Strip in St  George Utah
Caulking Zip Strip in St George Utah
Published: 2012/04/12
Channel: caulkerman1
Exterior RV Caulk Removal | Never Use Silicone Sealant!
Exterior RV Caulk Removal | Never Use Silicone Sealant!
Published: 2016/06/24
Channel: Duet Justus
How-To Caulk Your Kitchen
How-To Caulk Your Kitchen
Published: 2014/11/10
Channel: GE Silicone Caulk
DIY Tips: Caulking Baseboards
DIY Tips: Caulking Baseboards
Published: 2009/06/30
Channel: Stark Insider
How To Clean Up A Poor Caulking Job
How To Clean Up A Poor Caulking Job
Published: 2012/12/10
Channel: KungFuMaintenance
Allway 3-in-1 Caulk Silicone Removal and Caulking Tool
Allway 3-in-1 Caulk Silicone Removal and Caulking Tool
Published: 2016/07/12
Channel: KENFL74
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Man applying caulk to baseboard

Caulking is both the processes and material (also called sealant) to seal joints or seams in various structures and some types of piping. The oldest form of caulking is used to make the seams in wooden boats or ships watertight, by driving fibrous materials into the wedge-shaped seams between boards. A related process was formerly employed to join sections of cast iron sewerage pipe.

Caulking is also the term to describe the process used to make riveted iron or steel ships and boilers watertight or steamtight.

The same term also refers to the application of flexible sealing compounds to close up gaps in buildings and other structures against water, air, dust, insects, or as a component in firestopping. In the tunnelling industry, caulking refers to the sealing of joints in segmental precast concrete tunnels, commonly by using concrete.

Historical uses[edit]

Wooden shipbuilding[edit]

Dried-out caulking on the Severn trow Spry, now displayed on shore
The tools of traditional wooden ship caulking: caulking mallet, caulker's seat, caulking irons, cotton and oakum
A caulking mallet, tar pot and a piece of petrified tar found on board the 16th century carrack Mary Rose

Traditional caulking (also spelled calking) on wooden vessels uses fibers of cotton and oakum (hemp fiber soaked in pine tar). These fibers are driven into the wedge-shaped seam between planks, with a caulking mallet and a broad chisel-like tool called a caulking iron. The caulking is then covered over with a putty, in the case of hull seams, or else in deck seams with melted pine pitch, in a process referred to as paying, or "calefaction"

Modern marine sealants are frequently used now in place of the pitch, or even to supplant the oakum and cotton itself.

Iron or steel shipbuilding[edit]

In riveted steel or iron ship construction, caulking was a process of rendering seams watertight by driving a thick, blunt chisel-like tool into the plating adjacent to the seam. This had the effect of displacing the metal into a close fit with the adjoining piece.[1] Originally done by hand much like wooden vessel caulking, pneumatic tools were later employed. With the advent of electric-arc welding for ship construction, steel ship caulking was rendered obsolete.

Boilermaking[edit]

Caulking of iron and steel, of the same type described above for ship's hulls, was also used by boilermakers in the era of riveted boilers to make the joints watertight and steamtight.[2]

Modern use in construction[edit]

Caulk can refer either to the caulking substance or to the process of applying it. Caulking as a term has spread to the building trade, meaning the activity of closing up joints and gaps in buildings. The function of caulking is to provide thermal insulation, control water penetration and noise mitigation.

This is mostly done with ready-mixed construction chemicals sold as caulk such as silicone, polyurethane, polysulfide, sylil-terminated-polyether or polyurethane and acrylic sealant. Unlike construction caulk, which is applied where no building movement is expected, a sealant is made of elastomeric materials that typically allow movement of 25% to 50% of the width of the joint.[3]

One-component sealants are commonly sold in cartridges which are loaded into a pistol-like caulking gun (opening at the side) or barrel gun (opening at the end) for application. During the tool-working time, which varies by chemistry, the bead can be pressed into the joint so that it can bond with the materials on both sides, and also be smoothed. The time it takes for a chemical sealant to become a rubber is known as the curing time and varies by temperature and humidity.

Silicone[edit]

Silicone caulking extruded from a caulking gun
Silicone-based caulk on this upturned bathroom sink will spread smoothly, sealing the gap, when the sink is turned over and installed.

Silicone sealants form a durable, water-tight seal, but are not typically paintable. Some silicone sealants are made to be paintable with certain types of paint such as water or oil-based paints. Other sealants are paintable.

Backer rod[edit]

Backer rod, also called backer material or back-up rod, is a flexible foam product used behind caulking to increase elasticity, reduce consumption, force the caulking into contact with the sides of the joint creating a better bond, determine the thickness of the caulking, and define the cross-section hour-glass shape of the caulk. The backer rod also acts as a bond breaker to keep the caulking from sticking to the bottom of the opening called a three-sided bond; with the caulking only adhering to the sides of the opening in an hour-glass shape it can flex more easily and is less likely to tear. Backer rods can also be used to reduce consumption of the caulking by filling part of the joints.

Backer rod is often round and rope-like in shape but many special types and shaped such as square, rectangular and D-shapes are available. High temperature backer rods are available. It is available in different diameters and firmness, and in polyethylene and polyurethane materials. Backer rod also comes in open-cell and closed-cell types of foam.

Open-cell foam is porous so it will let gasses through which could otherwise cause blistering of the sealant. Also, open-cell backer rod allows air to get to the back side of the sealant which accelerates curing when used with air-cured sealants such as silicone. Open-cell rod is more compressible than closed-cell foam and should be 25% larger diameter than the joint.

Closed-cell foam does not absorb water and is impermeable. Closed-cell rods are less compressible and should not be compressed more than 25%. Closed-cell rod will also lose firmness and out-gas if damaged during installation or overcompressed or at sharp bends. The gasses cannot pass through this backer rod and can deform, weaken, and even cause holes (leaks) in the sealant as it escapes. Out-gassing is the reason open-cell backer rod was developed.[4]

Energy efficiency[edit]

According to the Consumer Federation of America, sealing unwanted leaks around homes is an excellent way to cut home energy costs and decrease the household carbon footprint.

Also, sealing cracks and crevices around homes puts less strain on home appliances and can save time, money and hassle by preventing major repairs. Additionally, increasing the lifetime of homes and appliances also puts less waste and pollution into landfills.

Preventing infestation[edit]

Sealing cracks and crevices prevents ingress by rodents.[5]

References[edit]

External links[edit]

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