O&MM Fabricator - May/June 2018 - 32

SHOPTALK

SEALING LOOPS

IN WINTER/COLD WEATHER

M

any installers don't realize how important using the right sealant is for increasing the life of saw-cut loops. Using the right
type of loop sealant is especially critical in areas that experience freezing temperatures. Sealants that aren't designed
for outdoor use or cold weather will often shrink and crack
when exposed to ultraviolet light and harsh temperatures.
When it comes to loop sealant polyurethane is king; polyurethane sealants have many advantages when compared
to other commonly used sealants.
Advantages of Using Polyurethane:
* Does not shrink or crack - it does not have an evaporation
cure like most other sealants.
* Holds up well in freezing temperatures.
* Does not conduct electricity - water based sealants can
facilitate shorts to ground.
* Has a low viscosity (flows easily) - is easier on your hands
and is self leveling.
* Can be cleaned up with rubbing alcohol.
* Some polyurethane loop sealants have a flat sealant tip
that allows you the seal the groove in one pass from the
bottom up, saving a significant amount of installation time.
* If used with a flat sealant tip, it can be driven over immediately after application. Less waste and messy cleanup.
Rubber-based sealants are vulnerable to abrasion and
will deteriorate when exposed to ultraviolet light (sunlight)
and water. Rubber will also deteriorate when exposed to
chemicals such as oil, petrol, salt, antifreeze, and other
solvents and airborne contaminants. These products are
often up to 25 percent solvent.
Water-based products facilitate shorts to ground and
should not be used to seal loops. These types of sealants

are usually meant for indoor applications and deteriorate
quickly outside.
Both rubber- and water-based sealants have pointed tip
applicators that require several passes to fill the groove.
This extra labor ends up costing you an additional $4.00 to
$6.00 per tube.
Crack Fillers are not designed for sealing loops. Crack
fillers are often water-based and are not designed to be
used if the temperature is expected to fall below 10° C within
24 hours of application. Crack filler is messy to apply and
requires that the lane be shut down for at least 24 hours as
the filler hardens.
If You are Buying Your Sealant From A Big Box
Store, You Probably aren't Getting The Proper Stuff
Need to seal loops in cold or freezing weather? Installing
loops for a freezer door? There aren't many sealants on the
market that can be used in below freezing temperatures.
Most sealants will become too thick to apply properly and
will not cure if the temperature is below 2° C. This leaves
you with two options:
Winter Blend Two-Part Polyurethane
This is a new type of cold weather sealant, and it has all
the benefits of a polyurethane sealant plus it can be applied
and cured in freezing temperatures. This type of sealant will
come in a cartridge with a "static mixer" mixing tip that properly mixes the sealant as it is applied. Winter blend two-part
polyurethane sealants apply easily and are self leveling. The
lane can be reopened immediately if the groove is slightly
under filled (which is easy to accomplish with a mixing tip).
Epoxy
There are a few epoxy products on the market that can
be used for sealing loops in freezing temperatures. Epoxies
require through mixing with hardening agents and are messy
to apply. When applying epoxy in freezing temperatures
special precautions must be taken to keep the epoxy vicious
enough to use as a sealant. Cure times will depend on how
well the epoxy was mixed and the ambient temperature.
Winter may have already passed, but a little knowledge
about loop sealants can save time, money, and headaches
(repeat service calls) for winter seasons to come.
BD Loops is a manufacturer of preformed direct burial and sawcut inductance loops for the gate, door, and parking industries.
Visit www.BDLoops.com to find a distributor near you.

32 | May/June 2018 * O&MM Fabricator


http://www.BDLoops.com

Table of Contents for the Digital Edition of O&MM Fabricator - May/June 2018

President’s Letter
Letter From the Executive Director
NOMMA Network
NOMMA Education Foundation
Preparing for an OSHA Inspection
Intellectual Ironwork
Sealing Loops in Winter/cold Weather
Happy Employees Without the Headaches
Supplier Members
New NOMMA Members & Iron Club Members
Gold Members
Take a Stroll Down Memory Lane – Top Job Awards Over the Years
Index of Advertisers
O&MM Fabricator - May/June 2018 - Intro
O&MM Fabricator - May/June 2018 - bellyband1
O&MM Fabricator - May/June 2018 - bellyband2
O&MM Fabricator - May/June 2018 - cover1
O&MM Fabricator - May/June 2018 - cover2
O&MM Fabricator - May/June 2018 - 3
O&MM Fabricator - May/June 2018 - 4
O&MM Fabricator - May/June 2018 - 5
O&MM Fabricator - May/June 2018 - 6
O&MM Fabricator - May/June 2018 - 7
O&MM Fabricator - May/June 2018 - 8
O&MM Fabricator - May/June 2018 - 9
O&MM Fabricator - May/June 2018 - 10
O&MM Fabricator - May/June 2018 - President’s Letter
O&MM Fabricator - May/June 2018 - 12
O&MM Fabricator - May/June 2018 - Letter From the Executive Director
O&MM Fabricator - May/June 2018 - 14
O&MM Fabricator - May/June 2018 - NOMMA Network
O&MM Fabricator - May/June 2018 - 16
O&MM Fabricator - May/June 2018 - 17
O&MM Fabricator - May/June 2018 - NOMMA Education Foundation
O&MM Fabricator - May/June 2018 - 19
O&MM Fabricator - May/June 2018 - 20
O&MM Fabricator - May/June 2018 - 21
O&MM Fabricator - May/June 2018 - Preparing for an OSHA Inspection
O&MM Fabricator - May/June 2018 - 23
O&MM Fabricator - May/June 2018 - 24
O&MM Fabricator - May/June 2018 - 25
O&MM Fabricator - May/June 2018 - 26
O&MM Fabricator - May/June 2018 - 27
O&MM Fabricator - May/June 2018 - Intellectual Ironwork
O&MM Fabricator - May/June 2018 - 29
O&MM Fabricator - May/June 2018 - 30
O&MM Fabricator - May/June 2018 - 31
O&MM Fabricator - May/June 2018 - Sealing Loops in Winter/cold Weather
O&MM Fabricator - May/June 2018 - 33
O&MM Fabricator - May/June 2018 - Happy Employees Without the Headaches
O&MM Fabricator - May/June 2018 - 35
O&MM Fabricator - May/June 2018 - 36
O&MM Fabricator - May/June 2018 - 37
O&MM Fabricator - May/June 2018 - 38
O&MM Fabricator - May/June 2018 - Supplier Members
O&MM Fabricator - May/June 2018 - 40
O&MM Fabricator - May/June 2018 - New NOMMA Members & Iron Club Members
O&MM Fabricator - May/June 2018 - 42
O&MM Fabricator - May/June 2018 - Gold Members
O&MM Fabricator - May/June 2018 - Take a Stroll Down Memory Lane – Top Job Awards Over the Years
O&MM Fabricator - May/June 2018 - 45
O&MM Fabricator - May/June 2018 - 46
O&MM Fabricator - May/June 2018 - 47
O&MM Fabricator - May/June 2018 - 48
O&MM Fabricator - May/June 2018 - Index of Advertisers
O&MM Fabricator - May/June 2018 - 50
O&MM Fabricator - May/June 2018 - cover3
O&MM Fabricator - May/June 2018 - cover4
https://www.nxtbook.com/naylor/NOMS/NOMS0518
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