EAA Vintage Aircraft Association — TECH TIP

Making sense of the adhesives market can be a sticky business, but understanding some basics helps in selecting the best types for old-house repairs. All the procedures for making a suitable wood joint must also be followed to achieve high performance.) The shear strength required and the amount of wood failure versus glue failure is specified in the standard. As a leading global industrial adhesives manufacturer, H.B. Fuller is focused on perfecting state-of-the-art adhesives, sealants and other specialty chemicals with best-in-class practices that improve the quality of our products and the lives of those who put them to use.

By loss of solvent ~ either evaporation of the solvent as in the case of contact adhesives or by the absorption into the timber in the case of emulsion (PVA) adhesives. Once cured, SikaBond-T21 will generate a super strong bond to a variety of substrates for glue down installations and at the same time form a membrane which reduces moisture vapor transmission from the subfloor and sound reduction membrane.

They are unique among adhesives in that they are made with different strength characteristics ranging from relatively weak materials, which allow the easy dismantling of large parts, to very strong materials for permanent fixing. Polyurethane glue does not dry like PVA glues, but instead chemically reacts with moisture in the objects being glued or even in the air. A very common application for epoxy glue is in the craft sector where they are used to bond different types of wood & stone materials.


Enhance your projects today with our world-class adhesive products and discover why we are a leader in global industrial adhesives with an unwavering commitment to our customers’ success. Polyurethane glue is activated by moisture, and swells as it is activated and dries. It dries very hard and quickly, and is waterproof, but dealing with dried polyurethane glue can be problematic for finishes. This type of glue ensures a lasting light-elastic bonding of your parquet floor.

After proper curing, either of these will seal the wood and protect it from most chemicals. The best types of varnish to use are epoxy varnishes and polyurethane varnishes. Careful peeling or scraping with a plastic scraper after glue has cured on surfaces. SikaBond-T21 (All-in-One) is a 1-component, low VOC, low odor, super strong, moisture-cured polyurethane adhesive for full surface wood floor bonding. I just built a cedar grill table for my green egg smoker, was quite proud of myself until I realized that all the joints are done with tight bond 1. Got plenty of deck screws in there too, but the thing was rock solid with glue before I added the screws.

For more common woodworking projects (boxes, furniture, shop devices, etc.), liquid hide glue is a great choice. White glue is the all-round best adhesive for paper, cardboard, wood, fabric, and a multitude of craft materials not subject to damp conditions. This brand was released in the 1950s by National Gypsum Company and became one of the standard adhesives used in the construction industry.

Epoxy adhesive products are remarkably diverse, ranging from paste fillers that are formulated to look and tool like wood, to water-white adhesives for mending glass, to structural adhesives that can be used for load-bearing conditions. Moulding and trim glue is a polyvinyl acetate formula specifically sold for carpenters and woodworkers who need a fast-setting glue that will not run or sag. Casein glue was used to make strong and robust joints in early aviation, but fell out of favor due to its susceptibility to attack by bacteria.

In order for an adhesive to bond (hold together) two surfaces (substrates), there must be several types of interaction between the adhesive and both substrates. Heat and humidity in the Houston area is hard to deal with on shelf life especially if you have senior moments and forget to bring the glue inside. It would then stand to reason that if conventional wood glues need to penetrate into the wood in order to obtain a strong bond, then these oily woods would present a challenge in gluing. When regluing joints, remove as much of the old glue as possible to create a tight joint; new glue does not adhere well to old glue.