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Pearson International Airport

Bothwell-Accurate is one of the oldest and most experienced companies providing Roofing and Waterproofing services to Industrial, Commercial and Institutional buildings in the Greater Toronto Area.

In business for more than eighty years, Bothwell-Accurate has completed over 40,000 projects, giving us the knowledge, experience and expertise that will ensure your roofing project is completed on time, on budget and with the best quality.

Bothwell-Accurate is a leader in commercial roofing, and as one of the only Canadian companies currently ISO14064 certified, is now paving the way with environmental roofing programs.

If you’re looking for a roofing company that combines depth and breadth of solutions with dependability, experience and quality, then Bothwell-Accurate is your best choice.


Safety Takes Priority

Safety for worker in the work place

At Bothwell-Accurate, the safety of our workers and the safe conditions and practices on our work sites is of the highest priority and we take every reasonable precaution to provide such an environment.

All supervisors on our sites, whether working directly or subcontracted for Bothwell-Accurate, ensure that their workers have the knowledge, training or experience to perform their job tasks in the safest manner possible.

Our supervisors ensure their workers are familiar with the actual and potential hazards of the job and understand the safety standards and regulations that apply to their work.

We require that every person affiliated in any way on our work sites to adhere to Ontario’s Occupational Health and Safety Act and its Regulations for Construction Projects as well as abiding by our own corporate Health and Safety Policies and Procedures.

Bothwell-Accurate employees and workers go through extensive safety training based on their functions, from site-specific WHMIS training, to equipment and hazard training and first aid.

We welcome any suggestions on how we might improve our safety programs. Safety is everyone's business, and we encourage everyone to work together as a team to maintain and improve our safe working environment.

Bothwell-Accurate also trains our employees in:

WHMIS, Basics of Supervising, Confined Space, Defensive Driving, Elevated Platforms, Fall Arrest, Fire Extinguisher Use, Health and Safety Rep, Hoist & Rigging, Lift Truck Operator, PPE, Propane, Sector Specific Hazards, Simulated Hazards, St. John's Ambulance (First Aid), Swing Stage, TDG, Traffic Control, and Trenching.


Safety Feature - Back Care Program


Long-term Study Shows that Training Can Help Prevent Injuries

The majority of back injuries in construction relate to manual materials handling

by Nadine Marks, B.Sc. (P.T.), Project Coordinator, CSAO

Research conducted by CSAO indicates that a multifaceted training program can reduce the incidence of back injuries.


Back Injury

Problems with back injuries in construction are well-documented and ongoing. Statistics from the Workplace Safety and Insurance Board (WSIB) show that back injuries continue to represent about 25% of all lost-time injuries (LTIs) in Ontario construction. This has been the case over the past decade, despite the fact that all-injury frequency has steadily decreased.

The majority of back injuries in construction (63%) are reported in connection with manual materials handling. Another 23% are due to slips and falls. The average cost of each of these injuries is $8,000. With a rate of about 2,200 back injuries in a typical year, that adds up to $18 million annually. A solution to the problem is urgently needed.

CSAO Program

Lower Back Injuries

Since 1990, CSAO has had a back care training program covering factors such as anatomy, posture, lifting techniques, ergonomics, exercises, treatment practices, and back care on and off the job.

The multifaceted program is based on adult learning principles designed to result in true attitudinal and behavioral changes. After each session, participants are evaluated to determine whether effective learning has occurred.

Program Evaluation

Because evidence on the effectiveness of education in preventing back injuries is limited, CSAO decided to evaluate its own back care program.

The specific objectives were to determine whether workers who had been trained in the program showed improvement in:

  • Their rate of back LTIs
  • Their overall strength and flexibility
  • Their knowledge and practice of proper back care on the job
  • Their perception of relative pain and disability regarding their own back problems
  • Their psychological outlook with respect to back injury.

The sessions were conducted by a trained physical therapist. A back strength and flexibility exercise program was delivered concurrently. The study was conducted over a four-year period.


Lower Back Pain

Of the initial 44 subjects included in the study, 39 completed the 8-week training program. Their ages varied from 21 to 62 with a mean age of 44. All subjects had some history of low back disability, ranging from mild to moderately severe.

The group consisted of 8 drywallers, 12 carpenters, 2 welders, 5 plumbers, 1 steamfitter, and 11 electricians. All were union members actively employed in their respective trades.

A control group was chosen to match the subjects in age, occupation, and range of LTIs for 1986-89, which was a period of relatively full employment and complete data.


Worker with back pain

The long-term effectiveness of the CSAO program in reducing back injuries was analyzed using LTI claim information from the WSIB.

In addition, when possible, worksite follow-up visits at 6-month intervals were conducted to track each subject's back condition and employment status. This biannual monitoring was continued for a total of 48 months.

At the start of the study, subjects were given a health questionnaire to complete.

This provided subjective data on health generally and back pain in particular. The process was repeated at the end of the program and the results were compared.

In addition, a back fitness test measuring strength and flexibility was given before and after the program.

Short-term measures of outcome were based on results from these two evaluation methods: questionnaire and fitness test.


Worker wearing a Back Support

Health Questionnaire - After taking the program, all subjects reported that their back pain was either at the same level or had decreased compared to what it was before the program. 90% of the subjects reported that everyday work activities were easier to perform after taking the program.

79% felt more optimistic about controlling their low back pain. All of the subjects said that the program was beneficial and that they were using at least some of the principles of proper back care on and off the job.

Back Fitness Test - Results showed no overall improvement in the group.

LTIs - From 1990 to 1995 there were no back LTIs in the group that had taken the CSAO program; in the control group there was a total of 14 lost time back injuries.

Follow-up Visits - Interviews during the 4-year study revealed that subjects were using, on and off the job, some of the principles acquired in the program. This was confirmed by on-site observation. Only seven of the subjects had continued with a back exercise program.

There were no back LTIs in the group that had taken the CSAO program.


  1. A back care program that covers points such as anatomy, posture, lifting, ergonomics, and warm-up exercises can help to control the problem of low back disability in construction.
  2. For participants in the program, the number of LTIs due to back injuries was significantly reduced.
  3. After taking the program, workers continued to practise the principles of proper back care to some degree on and off the job.
  4. The participants' perception of the severity of their own back pain and degree of disability improved. This psychological dimension is important because it can significantly affect a worker's likelihood of recurrent injury and success of recovery.
  5. There is a direct cost-effectiveness to a multifaceted back care program. The fact that low back injuries did not recur in the program group, compared to 14 LTIs in the control group, strongly suggests a positive effect, though a precise cost-benefit analysis was beyond the scope of this study.

For more information, refer to "An Evaluation of a Multifaceted Back Care Program for the Construction Industry" in Applied Occupational and Environmental Hygiene, Volume 12, Number 10, October 1997, pp. 642-7.


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